Useless Customer Services

Vodacom ********** upgraded my ****le to a contract with an Iphone 6 in the package. In February 2016 they contacted me and asked if I am upgrading this ****le. I explicitly said that I am not upgrading it. At the end of March, they debited my bank account with R 1500 odd. i phoned them and explained to them the situation. They told me I need to mail them an affidavit and my ID. This I did, but still they keep sending me requests to settle my account. I phoned them numerous times to explain the situation. Still, at the end of April they debited my account with R 2400. My issue is still not resolved and no-one is willing to assist here. Every time when you call, you need to explain the entire situation again, to no avail as the one person is more *********** than the next at their call center, I even spoke to a manager.