Incorrect info and double debited on my account

Someone from Cell C Sales department phoned me in April 2015 and offered me a new phone and contract and advise that my existing contract will expire end May 2015. They assured me I would not be charged double as when the one ends, the new one will kick in. I also ask them if my number will remain the same and they confirmed. When I received my new phone I noticed there was a sim card included and went to the Alberton branch where they confirmed it was just sent in case I did not have a slim sim. When I checked my account in June I was debited twice and phoned Cell C spoke to numerous unhelpful staff. Call was logged and I was just told that I was given incorrect info with no empathy shown. I also cancelled GET IT and this was not done no surprise. Requested to speak to managers on several occassions, always not available still waiting 3 weeks for Charlin and Lerato to phone me. *** - *** Took another upgrade with Cell C not sure why as they clearly dont care about their clients, was still debited twice in July.