Thank you for the answer that if the returns were rejected, the payment wouldn't be going through either. I sincerely hope that is true, but when I quit TTx yesterday afternoon after inputting all the payment info, BEFORE transmitting the return, it had a greeting message that my payments were sent, but I still needed to transmit the return... I can only hope TTx has given me a false statement of having already sent the electronic payment, since I've seen no followup.
Thank you also for the IRS phone number, but since the rest of your answer is about calling the IRS at least 2 days before payment date to cancel a payment, it is moot to my issue of having already sent the payment info a day before the tax return rejection.
