Contract cancellation

Vodacom and it’s employees are heartless ****mers,in 2020 I took a 24 months data contract and was told that I’d have to come and renew it after those months if I still want the contract..those were all lies because after 24 months they were still debiting and I was not aware of that since I work outside the country only after 9 months I realised that the contract was still active

I called about the matter and wanted to cancel the contract and they said there’s a fee for that,angrily so I paid that r1900 to cancel Now this year(last month)I get a call from them saying my account is on areas because there’s a month that wasn’t paid for,I got shocked because I had cancelled the contract years ago now my simcard is blocked they’re saying they don’t see no cancellation fee from me and they want proof.

I went to my bank to ask for help so they can retrieve bank statements that happened years ago and I was told I’d have to pay close to r1000 in order for them to do that

What hurts the most is that they’ve been taking my money for all these years without me knowing,I used to buy data because I know I had cancelled everything,it doesn’t show on my bank statements when I asked the lady who was on the line she said it doesn’t reflect on bank statements anymore and no further explanation was given..I asked why can’t they go back to the call I made when I was cancelling she said they can’t because it was a long time ago..I don’t understand this because when we call we’re being told that the calls are being recorded,how is it possible that they can’t see the amount I paid when they gave me all the instructions via call and sms and gave me a link to pay..I am so heartbroken I don’t know how to deal with this matter because it’s going to ruin things for me in the future since they’re claiming that I owe them