@ebrydon
It sounds like when you clicked submit it either paused and you clicked again or it just double charged. While I have not done this in the new self-serve account I have done this in the old self serve account whereas once I clicked submit it greyed out and did nothing then I clicked again and it processed the payment only for me to suddenly see that it charged me for the plan and then a Top-Up payment for the same amount and the balance was in my available funds.
But I have also clicked submit when making a plan change while suspended and the system charged me for the old amount of the plan and then immediately changed my plan to the new plan and charged me again. So there was no available funds in my account balance. Since I noticed both of these glitches occur I immediately contacted customer support who sorted it out. They will do the same for you although I recommend getting an account credit which will be processed immediately to your account otherwise refunds can take up to 30 days to be processed back to your card on file.
Contact customer support via the links already supplied in this thread or scroll down to the bottom of the page and click on SIMon to submit a support request ticket.
