I completed my tax return in September (paper submission) and had a letter saying I owed them £30 which I duly paid. Then on 3rd October a letter saying I have overpaid about £2,000 in tax and they will repay me. I just ignored it as a mistake but the money came in today!
I didn't pay the tax they mention on the second letter: I thought I might be owed about £700 but I didn't even pay this much.
So, what should I do? Ring and ask for a review? Put the money in a safe account until the ask for it? Spend it and hope for the best (am guessing not this 