BAD SERVICE FROM CELL C !!!

I have had the worst experience ever with Cell C . My contract ended in July and no one from cell c called me to let me know that I need to call in to cancel my contract in order for them to stop my contract. All my contracts I have never had to call in to cancel when it's due to end. I stopped paying the contract thinking it has ended only to find out that It is still active because I never called. I have called Cell C numerous times to try make payment arrangements with no luck , the agents are not helpful at all and some very impatient and rude . They opened a case for me with *** and the agent said I would get a call back as my matter has been escalated so I can make payment arrangements. I still have not received a call back a week later and this was the 2nd escalation I requested. I asked that I get assistance with cancelling my contract so the money does not increase while i pay the outstanding amount but no one is willing to help me, This is really frustrating because they were very quick to call me for an upgrade but no one ever called me to remind me that I need to cancel my contract! So we only get help when it benefits them! I called in today to ask for them to activate my sms lines so that I can at least go onto my banking app and make payment but still , the agents refuse to assist me. I am extremely angry at the fact that this amount that is due is mainly because of Cell C not sending any communication that I needed to call in and cancel my contract otherwise the payment will continue even after my contract has ended. And I have not had any assistance from anyone, instead all agents refuse to assist me and I get no call backs after escalating the matter ! I want someone to call me very URGENTLY from cell c that will help me resolve this as I have been getting very pathetic service. I want nothing to ever do with cell c, once this is sorted I will be porting my number to a different network! They have just lost a loyal customer.