Debiting incorrectly

I took a contract in march and was not billed to my account details that was provided to the telkom consultant at la lucia mall. They billed my old profile then had charged me double after i made them aware that they billed the wrong account also charged me rejection fee on my bill which was not my fault as all my documents was given to the consultant in store. i Have been back and forth regarding my credits its now December i have no feedback and. The service at telkom is terrible , i will not recommend them to anyone.