Factitious Bills

I have terminated every contract with Vodacom in April 2014. Yet, I continue to receive messages from a legal services company demanding that I pay my bill. I have recently settled over R3000 in an attempt to just avoid being blacklisted. Now, there is yet another outstanding amount of over R400. I am clearly paying someone else's account!!! None of my previous dealings with Vodacom has been successful and Hellopeter previously also did not succeed in helping me. Please. Anyone. Vodacom is the worst company I have ever come across. I urge anyone who still has a contract with these ******, to change to Cell C.