Self Assessment refund duplicated

Hi, I've found errors in the calculation of my self-assessment tax return made by HMRC of duplicate my PAY-E tax and self assessment, and I already sent a letter to HMRC regarding repayment methods a month ago, but I haven't received a response. Does anyone know how to repay the excess money to HMRC?

Hi,

You will need to contact our Self Assessment team to review this.

Self Assessment: general enquiries

Thank you.