This is very strange. I can't understand how come the BitDefender had access to your bank account. However, they had some trouble with customers support (which they admitted in public) so I can understand your frustration. Now I hear that they are back on track.
Still, it's a very good product, with innovative technology, multi- awarded, I used it in the last 2 years and I can say that I'm very satisfied with it.
I'm curios, what other anti-virus did you use?Were you more satisfied with it?And what kind of trouble did you have with the computer?