Poor Customer Service

I got a contract with TELKOM in 2019, when the contract was about to expire, they called me trying to give me a new contract. I agreed with then ever since the previous one is about to lapse. But to my concern they are still deducting money for the other aim card. And I told them I won't be able to pay R400 every month. I spoke to them since October, but it looks like to one is able to assist me. Poor customer service