e-filed 2020 1040 on 03/30/2021 with option selected to process 1040es payment electronically

on 04/15/2021. return was accepted on 03/30/2021.

with the expectation there were no glitches in processing of ACH for 1040ES on 04/15/2021

2021 return was processed with estimated tax payment noted above. this week got a letter from

IRS, stating client owed when return actually showed an overpayment, research determined

the estimated tax payment on 04/15/2021 was not processed. All bank info was accurate.

has anyone else experienced this isssue?