Mafia mentality of network provider "TELKOM"

For the past months I have had a bad experience with Telkom,my Bill has been miss calculated and at this stage its worse my invoice is about R1000 that I have received R320 extra that I have no idea where it comes from and the invoice doesn't explain how the R320 came about.my first contract is coming to an end this October 2024 and I'm afraid to renew the contract as I feel really abused on my funds.The customer service is the last thing they consider for their customers as I have been seeking for help and couldn't find any,all What they best at is to give me phone calls and ask me to renew my contract as they just want money from me.i can relate how they treat me I'm not the only one being treated like trash.The sad part is that when they call for what they want to say they can't even help with any other problems they I'll be experiencing.i am paying a lot of money on this contract ***) and I'm having doubts should I consider another 24 months of abuse or should I move on.