My Clients e-filed their taxes in April and had a direct  withdrawal from his bank account for $3900. in payment of their balance due. They claimed a partial recovery rebate credit.   They just received a letter from IRS stating that they  owed $5200.00 and  IRS did not acknowledge that they had already received the $3900.00 on April 13th.   I told my clients to go to IR.gov/account which they did and the $3900.00 had been received.  I'm not sure whether to amend the return or attach the screen shot in a reply to the IRS letter.  Also I want to go over the recovery rebate letter to check for any errors even though they earned just over $156,000. they still received $1260.00 credit.  Thanks for any input!