Bad service received regarding closed contract

<p>Cell c, I am totally unhappy with u guys. I paid all the money owed 17 January and request my contract to be closed. I even took time to go to cell c Krugersdorp to produce my proof of payment n request my account to be closed., as if that's not enough I took an intiatio to call the call centre and still request the account to be closed. To my surprise they only changed my sim card to prepaid n the avv was never closed. Few month down the line you still debiting me for what I don't know. I want to be call back now so that you can explain to me what exactly do I owe for</p>