Doubt its possible.... Whether it b in a bank account or prepaid account, if they froze it, no matter what you do (send docs) they usually tell you they will return funds to sender.... Did you ever get a reason why they froze account? if its a random freeze (which is never really random, they did it for a reason) they should tell u a reason, if not then they suspect something fishy and just want to send you thru the motions to see if you will try and come for the funds but end up sending it back.....