DSTV MULTICHOICE WRONG BILLING ON MY ACCOUNT AND ADDING PRODUCTS I DID NOT ASK FOR

I asked for internet and a router in November, I pay an amount of R249 a month, a few days later, they disconnected my internet and said I phoned to disconnect it when I did not. On 21 December my internet depleted and I payed R249 before the debit order date 24/12/2023, my internet wasn't connected even after I phone them 0n 08/01/2024. They debited an amount of R440 on 31/12/2024 which I reversed. When I asked what it was for, they told me someone added DStv access onto my account which I did not request. When I woke up this morning, 09/01/2024, I owe an amount of R628.01. My next debit order should be on 31/01/2024 and I shouldn't be owing them anything as I've made a payment on 31/12/2024. I stay on the phone with them for hours tilly airtime is exhausted and they don't resolve the issue. Please assist me in this. Thank you My number is *** Email: ***