Data Sim card contract

In June I was approached by a cell c sales person who offered me a special that there we running which was a Sumsang galaxy A32 at R249 p/m, the phone comes with a SIM card (2gb and minutes)I was interested and told her I was interested as it was a good deal, upon the delivery I noticed that there was an extra SIM card. I called Cell c to ask what was the extra SIM card for as I wasn’t made aware of it, I was told it was a data SIM card which I never asked for meaning the person added that data sim contract without my knowledge. I then requested that it may be cancelled as I had already have a data SIM card contract with cell c that I took last year (November 2021) and was never gonna need another one. I was told they’ll investigate about it and get back to me. To my surprise later on beginning of August, I’m receiving a call from the same lady who offered me that contract to say why am I saying I didn’t know about the data sim card I told her that she knew exactly that I didn’t as I clearly told her that I had a data sim card from November last year. She said but there’s a voice recording to prove that I agreed to it, I asked her to make that voice recording available to me too because I remember I even had to stop her at some point and ask if we still talking about the cellphone contract only, she just said after that no it’s okay and dropped the phone ( which for me was her trying to cover up). Early this week on Monday (22/08/2022) I received a call from a lady claiming that they listened to the voice recording and I did agree to the terms and conditions I asked her what really was I going to do with another data sim contract coz I already have I only took what I can afford and now I’m being financially constrained just because someone wants to boost her sales and worse I never even touched that sim card as I really don’t understand how can someone gives me something without making me aware clearly about it. I told her again that can that voice recording be made available to me she told me the voice recording cannot be emailed to I must go to cell c and request for it, which I don’t really understand because this contract was offered over the phone now where am I gonna get that time to visit Cell c branch. From what I’m gathering Cell c wants to cover up for the mistake of their staff at my expense as they continue to debit my money *******ly so. Cell C must just account for this, they must cancel this data sim card contract and bring my money back.