After you file

So I got on the line with someone and she said they can't do anymore extensions (I've had 2 extensions for 120 days each) but if my 1040x is correct then my charges should be wiped and I won't have to worry about paying it. She said that if I get a "final notice" before it gets sent to collections then I should pay it and wait for it to get refunded. But she said I have about 3 more notices left until then.