Recieved seperate letters from irs for UE refunds, but with same SSN. Amount in letter was not what was deposited, nor what was figured out in turbotax software. Advice?

Both received letters stating same amount for refund but with the same SSN. Only recieved one deposit which was different to letter sent from IRS and also what was calculated when I looked at amending return but was advised not to and to just wait for IRS.