7 Months of frustratingly bad service

Since about August 2014, I have been refusing to pay my Vodacom account as I was being billed for a line since April that was not mine. I was not even in the country when this new contract was taken out and added to my account. Upon my return to SA in August, I was able to take the issue up with Vodacom. Firstly, I had to provide a letter, certified by the police, before Vodacom was even prepared to investigate my case. My point is that, either through ***** or incorrect processing by Vodacom itself, I was being charged for something I did not request, approve or agree to. After another three months of being passes around from customer service to billing and accounts to collections to ***** department, Vodacom eventually confirmed that these charges should never have been made to my account. Now another 2 month battle to have these corrected was waiting for me. At last, in early January 2015, it was confirmed to me by Vodacom employees Hope and Degree what my correct portion of the account is that I should settle to have my correct two contracts re-activated. A week later I get a phone call to say that I should pay another R2000-00. I want a senior person to speak to me. No service