if they didn't do much, you could ask your bank to see how to deal with it. May be your bank is able to get your money back.
SE won't do anything like that. Once they got the money that is all they care about. It doesn't matter what you say or do. If they processed and charged you and it went thru, SE just accept it at least the bank says it was not an authorize transaction and well you as the bank account owner will need to talk with someone from your bank about this problem
