Vodacom poor client relations

Over charging my account,have a WiFi network which is a 75mb line uncapped and it was off most the time and the signal was poor so I asked if they could assist and they suggested I open a new contract with metro fiber which is a 50mb line and the signal is just as bad and started getting emails from Vodacom collections of R4000 and R2000,tried calling in and after 45min finally spoke to someone at customer care the investigated and found that they opened 2 WiFi network contracts for 1 house through open serve and metro fiber and charged me for both lines for more than 2 months,went in and spoke to a sales person they phoned in and gave me a monthly debit order of R750 and recieved a email saying I'm in arrears and will be debited of R1900. Can't phone in to a call centre and complain and give my details as my cell number was given to another client on a contract. Went in again to resolve this matter and Vodacom collections submitted my account to ITC and is affecting my credit score so I cannot get another contract or even make a R1000 loan if needed. worst experience I have had as a client and IV been with them for more than 15 years!!! In this financial situation due to the economy and we still need to deal with *****ulent situations like this is pathetic!!!!