That can take up to 30 days to get unsuspened, Trust me i went though this, and exactly on the 30th day about an hour before i was unsuspended.
It was the same reason for me, expept it wasn;t my fault really, I used a coupe thing so my balence was 0.00$ and then sent me the invoice and i didn;t pay it becuase well its 0.00$ nothing to pay, and i got a latepee and was suspended.
Heres what you can do to get out of the latefee, (oor what everyone has told me)
Just use their live help feture and be like I'm sorry but i was on vaction or My internet broke and i had to get it fixd and i just got it back today, and try and get them to remove it, and just beggin then ask for their suporviser if it dosn't work.