My sister and I are my late fathers executors and we have a UK grant of probate, however, this doesn't hold much weight in the US. What can we do?

I bought an iPad from John Lewis in 2017. I started having problems, so they suggested I send it back. Unfortunately the company keeps sending reconditioned replacements.

I was sent an e-ticket and when I printed it out, I realised my flights had been pushed back by 17 hours but KLM won't give me any compensation. What can I do to get my money back?

I used Anyvan Limited to move a piano from my house to my daughter's property, but it was damaged in transit. But Anyvan now says it only acts as an agent and accepts no liability.

HM Revenue & Customs (HMRC) claims that I have received untaxed interest of £2,640 from Secure Trust Bank and owe £300 income tax.

My wealthy mother is engaged to remarry and my siblings and I are worried that if it doesn't work out a large part of our inheritance might be at risk.

Our Consumer Fightback columnist is here to help you get a fair deal, but sometimes we get it wrong on what we think we are entitled to. Here are some common examples of misconceptions.

My elderly relatives are still owed £2,000 for a cancelled order. The company promised every week for three months that a cheque would be sent, but still haven't paid up. Can you help?

I had a letter from HSBC saying it had decided to close my beauty salon's business account. I rang the bank and was asked to complete a lengthy online form, which I did as best I could.

My husband died in September 2016, after putting his affairs in order. In February 2017, Interactive Investor was instructed to transfer my late husband's shares Isa to mine.

I took my dog Oliver George to the vet to have his nails clipped - but during treatment, his dewclaw was pulled leaving him needing surgery.

You should look into Liongate Partners, which is being used to promote crypto currency trading. It promotes a company called DSTL which trades as daxpartners.

The Financial Conduct Authority was always going to be a bed of nails for Bank of England governor aspirant Andrew Bailey - and so it has proved.

I took out two Equitable Lifecare Limited funeral plans. The sales agent assured us repeatedly that we could cancel the plans at any time. I've tried to cancel them both but have had no reply.

Whether you've got a bad credit history or no credit history to speak of at all, you might find you are forced into applying for credit cards with higher interest rates.

My wife and I have been foster carers for more than 11 years. In 2017 we fostered a teenage girl for three months. In July I discovered she had stolen two credit cards - Barclaycard and Creation.

Land Equity Limited is offering 15 per cent interest on a one-year investment in a Birmingham property development, can you investigate please?

I bought a PAYG smartphone last week and have barely used it but I noticed that the credit has gone down. I read online it could be due to having my data switched on. Why is this?

I have an account with Revolut which lets me operate in both euros and sterling. On October 4, Revolut 'temporarily disabled' my account for unspecified 'security reasons'.

I have just started a new job and joined the company pension plan. I'd like to take a more active role but I don't know how to find out what I can and can't do and where I should go from there.

I belonged to the Eze Group timeshare scheme before the owners were jailed. I have now been told Spanish courts have seized €1.3million (£1.1million) from Eze, to be repaid to members.

Have you bought someone a Christmas present they didn't like, received one you've already got, or bought something in the sales and realised it's not quite right?

As a multiple victim of the implosion of the Woodford investment funds, facing heavy losses, I can't but think that the response of Bailey and the FCA to early warnings was dilatory and timid.

In just the past ten days I've battled with my home insurer after the price of my policy was hiked by 30 per cent for no reason, chased my old energy supplier for a £174 refund.

My Samsung phone was only a year old when it spontaneously caught fire in the footwell of my car. I put it there after receiving a phone call, but as I drove off I noticed a strange smell.

My dad will be 90 next month and has severe health issues. Revenue & Customs wrote saying he no longer needs to submit a tax return.

I am sending you an investment email I received from Rothco Wills and Estate Planning, offering a minimum of 12 per cent guaranteed return plus bonuses. Who are these people?

My father bought a house in Stockport, Greater Manchester, in 1971. Several years ago, a tenant tried to seize ownership by claiming squatter's rights.

I rented out my late mother's house. I chose Howards Estate Agents to find a suitable tenant in full time employment, but it later became apparent they were not and defaulted on the rent.

If you are older than about 30, you have probably never heard of Klarna. But for millennials, it is one of those firms, such as Google and Hoover, that is so widely used it has become a verb.

One couple turned up at Heathrow Airport for their flight to Pittsburgh, Pennsylvania via Toronto - but were refused boarding for not having a transit visa for Canada.

I had hoped that after your probe into Revolut, we could move on. But it has messaged my wife, saying that her account has been closed and funds returned 'to source'. Well, I was that source. Where's the cash?

My son has experienced no end of problems since upgrading his contract. His phone has been cut off, debt collectors have demanded money, and now he's being threatened by bailiffs.

Parking tickets are the bane of every driver's life. Many of us who drive have fallen victim to them at some time or other - and often they are fair. But at times they are downright wrong.

My son rented a vehicle in Corsica in July 2017 and was involved in a minor accident which was not his fault. Enterprise Corsica, the car hire firm, has not repaid his €950 excess.

I was listening to music on my Spotify account when I found it had been taken over by someone else and I couldn't listen to my own music. How was someone able to get access to my account?

Two South London men awaiting trial on fraud charges have been ordered to hand over £8.6 million.

In January 2018, my son Michael paid a deposit on an off-plan new build apartment in Smithfield Square, Birmingham. Last year, we discovered that there was still no planning permission.

I closed my company in March last year. Final corporation tax due stood at £2,232 and I have tried repeatedly to pay this, but now the company is closed, the Revenue just does not accept it.

I transferred some money to someone who was doing some work in my garden and unknowingly and rather stupidly managed to get the account number wrong.

P.S. writes: I am secretary of a not-for-profit charity. ScottishPower for some reason reduced the utility payments for our premises from £748 a month to just £1.

I opened a Lifetime Isa (Lisa) with Skipton on June 27, 2017. I recently tried to pay into it, but discovered Skipton had closed it on September 16 last year.

Me and my now wife got married on a Celebrity Cruise in December of last year. We paid £1.7k for photos to be delivered but three months on, we still haven't received them. What can we do?

Ms B.M. writes: I had a Barclaycard, and I believe there was PPI automatically included, so I asked a claims company to look into this for me.

I was contacted by Xtraderfx and told that it would transfer my frozen credit balance of £680 to my NatWest credit card. I agreed and gave my card details.

I received two texts from PayPal in the early hours of August 6 about a suspicious transaction. It was for £170.94 to a company called Zalando SE. I replied at 10.21am to say it was unauthorised.

Our boiler has been playing up since the weekend and we ideally need a plumber to come over and check it over. Are engineers able to come out to do necessary maintenance?

I moved flat last weekend, thankfully just before the Government lockdown. Will I still be able to get my deposit back from my old flat, once I leave, within 10 days?

I fell for a sales pitch from Easytrade.biz, and now am unable to withdraw any money. I have filled in several withdrawal forms, but it never happenes.

We have a chunk of cash we want to tuck away for up to five years. I have seen two bonds advertised through Google. One is named Chelsea Bonds, the other is Infinity Bonds.