Rain network bulling me around, Making me pay for what I don't know

I am tired of this network provider keeps playing me like a fool. In my last communication with them, I asked them to give me proof of why they keep requesting me to pay the money that they claim I owe them.

I also asked at the beginning of this month to resolve their system that keeps showing different amounts that I must pay because, on the 26th of August of 2024, I spent about R609. In contrast, their service is R529 per month, today is the 29th of August 2024, 3 days after I made payment they requested me to pay R569 for what I don't know. I need help with this company, please

When I was requested by them to send proof of payment for April of 2024, I sent it to them, but when I requested them to send me proof of why I owe them money, I never received any, The only thing they know how to do is bully me around by switching my service for no reason at all.