Vodacom should not continue to operate,

In August, 22nd/23rd 2022 I called the call centre and requested a cancellation of the the fibre contract as we sold the house and we were moving to another province and I was provided an amount that I needed to pay and email the proof of payment to ***, which I did. 6 months later, on the 01/04/2023 my contract was re activated without my consent and Vodacom is failing to tell me who instructed the reactivation snd how. After calling a numerous times to their call centre without any assistance, today they tell me I owe over R9000 and I must pay because they can’t see that I requested a cancellation in August 2022, the only cancellation is by the system in 04/2024 due to no payment. I have never experienced such incompetency in corporate and how unfairly a customer can be treated. I have requested that they listen to the call recording in August 2022, and no one comments to my request and that all they know I need to pay. Can someone tell me what one needs to do, I think I need to request some legal assistance with this one.