Cell C cellphone contract not terminated q

Hi Peter,

I have a problem with Cell C not wanting to close my cellphone contract. It ended end of August 2017 and they have been debited my account for airtime I did not sign up for. I did not see this at first as my bank does not notify me for transactions under R100; I noticed this when going through my statements last month and made a query about it. I immediately called and cancelled my contract and received the sms informing me of this. But today I got credit with airtime after being told that my sim will be switched off month end? Please assist me. My cell c no. **********

Regards Ntando