Total Wireless overpayment

Anyone know how Total Wireless deals with overpayments? Would like to try them out but not sure about long term due to the higher price...

What did you have in mind?

If I pay ahead for 3 mo then decided to port out to a better deal, do I get my "Total Wireless Reserve" refunded? If so, does it go back to the original credit card or does TW mail me a check? For example, I prepaid my Sprint 1 year free but ported out to Mint... Sprint will mail the overpayment to me as a check in 60-90 days.

None of these prepaid services will refund credit. Balance will be forfeited if you port out.