Trapping consumers and system designed not to easy cancel cotract

Last year around March / April I entered into a month to month contract with Telkom mobile (wifi Sim) and when I wanted canceling around July same year I was told, I am not allowed to until I paid off the balance in full same time of around 2K and they stopped the services and yet continued to bill me month to month until now end march for services they're nkt providing and the credit increased to 6.2K until I had to forcefully pay that 6.2K amount from my bonus instead of buying much needed stuff for my family because they were continuing to ruin my credit record and that denied me much needed loans for my family until I had to pay, I was really cruelly and unfairly treated and ********** by keeping me tied to the no longer serving contract yet continued to bill me. I KNOW I AM NOT ALONE WHO EXPERIENCED THIS FROM TELKOM, my hard earned money for my kids livelihood taken cruelly and my credit reputation destroyed. I am really aggrieved.