Take money from me and a contract I didn’t agree to

I contacted the call center on 1 June at 13:53 to query an un authorised amount going off my bank account. The lady was not listening to me when I said I never authorised a data contract with cellc. She insisted that I did and it was a discount contract. I said to her that I got a call a month back from cell c where they tried to get me to take a contract and I clearly stated to the lady that I remain on my month to month as I had my card since 2019 and I continued as is month to month. The lady did not listen to me and said I agreed to the contract I didn’t. I get charged R327.32 for a new contract and new device??? I didn’t sign or agree to any contract my words to the consultant that called me where leave it at 10/10 as always month to month. I said to the lady on customer line on the 1 June at 13:53 that I didn’t agree at all to the contract or anything and I wish to stop the contract which she said I’ll pay a cancellation fee and then decided to not resolve the issue and just cut the call. I was so frustrated at the *********** lady who refused to listen. I never ever agreed to a new contract I never ever agreed to anything and being billed for this so called new device and card etc is clear to me that there is people probably pocket that device and the person like me has no way to sort it out I reversed the amount. I also wish to stop any further business with cell c due to the call been cut I didn’t receive a reference number.