Please File a compalint with CFPB (Consumer Financial Protection Bureau) at http://www.consumerfinance.gov/complaint/ if you have the problem with Myprepaidcenter.com wants $15 to replace the expires card. Don't let this type of company get off without any scrutiny.
According to CFPB:
Question: If my prepaid card expires, do I lose my money?
Answer: If you have a prepaid debit card and the card expires while you still have money on it, you can request a replacement card to access the funds.
The funds on a gift card will be good for at least five years, even if the physical card expires at an earlier time. If your card expires and there are unspent funds on it that have not expired, the issuer may give you a replacement card or give you the money by another means, such as a check. Either way, they may not charge you a fee.