HMRC gave a refund from my tax account to fraudster making repayment claim

HMRC said in June that criminals had stolen £47m by accessing the tax accounts of 100,000 individuals then making bogus repayment claims. Photograph: Rosemary Roberts/Alamy

Since January, I’ve received numerous letters from HM Revenue and Customs stating that I owe £2,500 plus interest. My accountant and I have written to HMRC explaining that my tax account is fully paid up, but have received no reply. I’ve since been chased by a debt collector.

EF, London