Very bad service,incorrect billing & *********** staff

Vodacom is unable to resolve incorrect billing on my account since April 2018.i have opened 23 service requests thus far but they closing them without feedback provided to me.My account is still in arrears and no one from vodacom can tell me where the balance is coming from,yet they handed my name over to ITC. I asked vodacom fibre consultants to tell Bongi malgas/Nomthandazo nkombane/Phenyo legodi/Yolisa leburu/Mimi govender to personally contact me as they are the only people from Vodacom that understand what's hapenning with my account and i'm yet to get their response.Bongi malgas(Senior specialist: Key accounts manager) approved credit request to be done on my account but even today my account is not updated. The level of incompetence and lack of urgency from fibre staff is very annoying.Please resolve this matter ASAP.My latest service request is SR***.