A CIS subbie received a letter in respect of 2021 return asking him to confirm his ID with various documents and complete a simple questionaire about how the figures were compiled. He sent them all off. Subsequently it appears that HMRC lost this info and suspended his SA account as they couldnt verify his ID. This was over a year ago now. We subsequently submitted copies on his behalf and asked for reinstatement of his account and repayment of the amount due. However both ourselves and our client have been sent from pillar to post. HMRC now admit they have the documents but no one seems to be dealing with it. So, client owed refund for 2021 and cannot submit 2022 and 2023 returns (no SA number). Both of these show repayments! We do not have many repayment claims, so have not seen many of these, but on speaking to another accountant with quite a lot of subbies as clients it appears to be a "thing" The question is how to get the clients refund and reinstatement of SA account.