I had fraudelent use of my Barclaycard (unauthorised use in the UK followed by the USA). They were eventually very good and my account was sanitised of the fraud. However their initial concern with a number of UK frauds was, to say the least, laid back. It was only when I was on-line and picked up a $399 transaction in the USA that they acted instantly and froze the account. The frauds in the UK (Tesco Mobile) were considered too small and unimportant to bother about - however they eventually had to adsorb $500 worth of fraud when they could have stopped it at $15 if they could have been bothered.
You'll get your money back. But no one seems to care about your worry, after all you are only a customer who makes them money. No wonder the banking world is in such a mess.