Misleading telecanvasser

I was phoned early in January asking if I wanted to continue with my Vodacom contract as it was coming to an end. Thinking I was speaking to Vodacom I agreed. At the end of Jan I have been billed by Vodacom AND Elite Mobile. I tried to phone them and spoke to a Jason who said he could not get into the system and would phone me back. Still not heard from him.<br> I want out...... it is not what I thought it was.