When I've had them do that to me, I had to request a refund and start over. You send Gary an email with your form's ID number and he submits a refund request.
I emailed them once and got no reply however some one in the office accidentally hit reply all to my email, with a question about what they should do for me. That was on Thursday of last week. I called yesterday and got Gary's voicemail. Finally this morning I sent an email to Gary, with the forward email and a copy of the email from pay.gov. I explained to Gary that I was married and my wife was not happy that I lost $200 dollars to federal bureaucracy, and that I knew that someone up there knew about my problem and still had no solution. Within and hour and a half I got a call finally and they are reversing the charges. Once I get my money back I get to try again.