Telkom overcharging their customers

I have a problem with telkom services ,i lost my job last year december 2023 .i called telkom billing company to inform them that im no longer working ,so i want to change the method off payment .i would like them to stop debitting from my account since i no longer have a source off income coming in my bank account ,One off the consultant gave me a bank account and easy pay number he said i cant use both .i asked him how long will it take for the money to reflect on their system he said it takes two working days in order 4 it to reflect on their system .He said in order to be on a safe side i must pay 10 days before the due date then i wont be experiencing any problems .i payed for on the 15 of april and also on the 15th off may first week off june my data was blocked .i called the telkom billing company i was told that i owe telkom R410 ,so i was suprised ,because im paying R758 everymonth and i have never missed any payment before i asked them what was that 410 for i was told that telkom debited on my bank account my found insuffician funds so its a 200 penalty for that so its 400 ,because off it was debitted for april and may i told them that i payed on the 15 off april and may so how can it ddnt reflect on their system ,because i payed 13 days before my due date i was told to pay that money so that i can have my data back .i did pay that money the consultant said i must continue paying 10 days before my due date she will escalate the matter i wont be having the same problem again .so i payed on the 15th off june and july and august then end off august i was told that i must add R 110 on top off what im already paying i was supposed to pay R868 instead off paying R758 i called again still i was told that i owe that much and didnt have any explanation on the second off september 2023 i wrote and email to hello peter explain my problem i havent have any feedback .on the 1st off november 2023 i was called at telkom customer service informing me that im owing them another R553 and i have already paid them on the 15 off October 2023 they asked me to send them prove off receips i did send i havent got any feedback since may you please assist me on this matter i need a solution on what have been happening i cant continue to pay more than what i have to pay i have been overcharged unnecessary its not fair at all