CONTRACT NOT CANCELLED

I've had enough of this matter and taking this matter further , first of all I have to existing contract with you that I signed my contract expired December and I didn't sign up for no upgrade what so ever but I'm still be billed on my account. I've been calling an complaining on Facebook but nothing. The agents are so *********** that Person Bonginkosi who's handling my case my do his job, emails escalation has been sent to him but nothing for 4 months. Your processes are pathetic how can only 1 particular case be only resolved by 1 agent ? and don't give that irritating reply of will get back to you because I have not received any contact from Telkom since my last complain.....this is messing up my credit record for something I didn't sign up for I'm taking this to the national credit act!!!!