Bitcoin does not have a central authority that control it activities and that is one of the advantage and also the disadvantage of decentralization, unlike the faint paper money where the bank can make refound back to the sender in the case of wrong sending or frauds where the found still remains in the receiver account and it part of the double spending mechanism. But bitcoin don't have this feature and before a blockchain development that will carter for this will be in place it will take a long time from now, may be when bitcoin get regulated that can happen but until then bitcoin transactions is just base on p2p no middle man.