Self assessment tax return

Hi So I got a tax return for 2021 -2022 that you owed me tax, so I got it in a tax rebate, then, you guys send me out a letter a few months later stating I now owe you what you owed me of £941 why is this and how is this fair?

Hi,

We would need to review your record to see why the calculation was amended. You will need to contact the Self Assessment team.

Self Assessment: general enquiries

Thank you.