Contract

I called in April to find out when my contract can be cancelled and they told me that I need to call in a month before my contract is to be cancelled which was the 7th of June 15. I called in May and spoke to a gentleman by the name of Marato reference no *** and he advised me that I could place my cancellation as long as the acc is up to date. I placed a cancellation and my contracted end on the 7th of June which after I couldn't use the phone. I thereafter received a bill for R745. I queried this on the 21st August with hlengi mchebme whom couldn't answer my questions. I asked for a manager to call me and to date have not had anyone contact me. I was billed on the 25th June 15, hw is this possible, I have a limit on my account and it get locked when it reaches the limit. I was also told that I will be refunded for the data and airtime that is left after the contract is cancelled by Marato. Its gone 4days and still no feedback from Cell C. Cusomer service is terrible no wonder why customers are cancelling.