I had an transaction with entropay, the amount was debited from my card, but entropay showed it as 'Transaction failed'. So, I am thinking of filing a chargeback, so do I need some proofs or something like that? According to the bank officials I just need to register a complaint, and it is guaranteed money will be credited to my account, with no additional proofs needed. Anyone faced some sort of legal issues or something like that in chargebacks. Thanks for helping me out here.