Poor customer service by Cell C

<p>I wss offered an early upgrade by cell C at the store and they couldnt complete my upgrade because system was not allowing them and i had to call their call centre to do it. and it was done when the device arrived it was not what i anticipated and i returned it within the 7 days, this was in April till today nobody wants to speak to me from cell c i've called severall time they make me to wait while they checking and i've never hold less than 30min and the worst times it was when i held for 2hrs and the guys went home left me on the line. i'm still charged the tarriffs of the upgrade that didn't happen from April. This contract is coming to an end in September i just want then to cancel the contract and i dont wanna deal with them any more it been 5 months trying to resolv this till to date <strong>NO ONE WANTS TO HELP ME AND RESOLVE THIS FROM CELL C. </strong></p>