Thanks for the replies! I am the only one with a debit card and apart from my boyfriend (who didn't do it

) No one even knows I have one.
I've thought about taking legal steps but I don't know what my chances are. With a "normal" credit card or bank I wouldn't have a chance in a case like this, but then again they are not as reliable. I think I'll try to find out if there are people with similar complaints first, and then try contacting my lawyer anyway.