Same here. I'm paying 4.259$ in 4 installments, 2 already payed. Yesterday they grabbed the whole chunk from my account -- obviously without notice. I called them the morning after following the instructions posted here. They said that the payment hasn't been processed by their system yet, so it doesn't yet appear in my IRS account. They will refund me as soon as possible starting next wee, i.e. allowing a few business days to process the payment.
I'm lucky 1) I had the money in my account 2) it's not credit card payment day
Insane.
