Very Disappointed

I logged a call to reverse a payment that was suppose to go off only at end of May however this morning I find the payment has gone off and now my bank Standard Bank is refusing to reverse it after telling them that the payment had already gone off for April. Is it not my money you suppose to look after? Now they telling me to contact Vodacom directly as they do not reverse payment for Vodacom. Again it my bank account and Im suppose to come first. Im very disappointed in this. In this time when you need your money your own bank refuses to assist you. I mean who is this person on email to tell me no they wont assist, with my own money?????