Worst service ever!

I am totally at the end of my tether with Vodacom. They have put me on ITC for an account that I do not even have. I am trying to purchase vehicles for my business and cannot do so due to this. I have been to various Vodacom branches to check but no one picks up anything on my name other than my existing accounts that are up to date and have always been. I have called their customer services for weeks trying to sort this out. All I get is broken promises. All I want is for them to send me a letter stating that I do NOT have any arrears accounts with them and they are giving me the run-around. Today they told me they will email the letter immediately and i am still waiting. What more must I do. I have now consulted with my attorney to deal with this matter and will take Vodacom to court if I have to as my business is suffering due to their utter incompetence. I have had it and I am definitely NOT renewing any contracts with them and I have 3 at the moment. I am for the last and final time appealing to Vodacom to sort out this matter immediately.