Very unhappy customer

I had contracts with cell c from 2018 17 November a 2years contract come end of my contract. I call them on the 17 October 2020 to cancel my contract and they said they will cancel the contract on the 17 November 2020. Apparently my contract was cancelled because on the 4th of December 2020 I received a call +27 (84) 180 - 0084 I couldn’t here the guy who called me cause I was driving so I had to hang up the call.After that I received the sms saying my device insurance is cancel if I didn’t make any call I must call them on these number ***. And I made the call and they said I called on the 4 December 2020 to cancel the device insurance and I’ve never made that call. I’ve only received a call from Cell C guy on these +27(084) 180 - 0084 and I’ve cancel the call because I couldn’t hear the guy. So the when I call the helpline I got help by Romeo Ncholo and the guy said I made the call and I told the guy that I never made any call cancelling my device insurance and the guy told me that I must hang up he will make a follow up than he will call me back. And he did just that the following day and he told me that I made the call and they have the recordings and I told the guy to call the number that is in the recording and the guy did just that and he called the number on the recording on another phone while I was on call with him. But the guy on another call apparently hang up on Romeo Ncholo . And when Romeo Ncholo tried to call the number on the recording again it was on voicemail that automatically proved that I didn’t make the call to cancel my device insurance. But Romeo Ncholo told me even if it not you who made the call because you’ve already cancel your contract with Cell C your device insurance also get cancelled automatically that didn’t go well with me but ok fine I hang up the call. Today on the 8 December 2020 I received an sms saying I’ve renewed my contract with Cell C and I signed for Pinnacle 1GB TopUp 2019 . Just after that sms another sms went through and it says thank you for renewing your contract *** which is my number but what troubles me is I’ve never signed any contract or call for my contract renewal. And I called the ***** line on *** and they keep on transferring me up until I got hold of the guy who told me the contract it comes with the P/smart 2020 headset which I’ve never received. So now I don’t know what to do. My details are Mr Mondli Mxolisi Gcaba email is ***