Well, I'm not really sure if you have a case. I mean, it would have been avoided if you had Overdraft Protection (which is pointless if you TRY not to do this stuff).
I got hacked once on my PayPal and someone tried taking 300EUR from me. It came out of my bank account (later refunded by PayPal). But I still had to pay a 37$ NonSufficient Fund. I managed to call my bank explain the fraud and I got it reduced to 8$
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Happy days