Charge bounce fee

Beginning of the month I received an sms from Vodacom say they double debited my account the first payment went off I didn't have money for the second one to go off(which was not supposed to happen) I didn't have the money in my account now Vodacom is charging me R100 bounce fee for their mistake I went in on Monday and was told within 24hours it would be done and not. I am also going to social media with this complaint, Vodacom phone me at 6 in the morning when my account s not paid but I must wait until I complain before I get my account sorted. I will never recommend Vodacom to anyone when my contracts come to an end I'm done with them.