No word from the OP, if this is in fact related to the 25k in miles, it is clearly a mistake and I am sure Citi will eventually fix this. Problem is, if they filed a 1099 with the IRS, it is kind of like someone testifying at trial and telling the jury to forget what they heard. So dont expect the IRS to ignore what was filed with them. If nothing else, now your tax return will be subject to review it may have not otherwise been subject to, if in fact this was in error.

Jim