worst Service and empty promises from Capitec bank

Capitec posted three transactions twice in my account ,saying i have over drawn which is not possible if you Don't have overdraft. i spoke with two consultants on the phone who clearly don't know what they doing and went to the branch on Saturday and they said they will reverse after i proved is capitec's fault and they confirmed I will get an sms within an hour and till today .I did not get an sms three days later and my account is sitting in negative balance