When I've had money fraudulently taken from my account I've had no problem getting it refunded.
However are you absolutely sure that it's not a payment that you actually made myself? I got a credit card statement showing a payment that I didn't recall making (as I'd no recollection of using that card at all for several years). When I phoned the card company, the Asian call handler kept insisting that I'd made a payment to "Charlie Roy", which meant nothing to me. It was quite some time before I remembered that I'd found that I couldn't use cash when buying bus and train tickets at Charleroi Airport ;-)