Telkom Fibre accounts MESS

In April during lockdown I signed a contract with Telkom for a 20mbs Fibre line for R699pm. Within 3days the line was up and running. As part of the online deal you dont pay for the first 3 months. After 3 months I was billed. Every month a differnt amount. In December they billed me R1700. By signing a debit order I cannot decline the payment. With customer serivices directing me to accounts and accounts again directing me to services, no one could assist me to clarify what was happening. I recieved an SMS in December which stated discounts was caluculated incorrectly and will be billed accordingly. I was assured that the next payment will be according to the contract I signed. This month my bill is nearly R800. I am fed up! No one has answers and empty promises leaves me in the same situation as last year where I pay more than I signed up for. Staying on the line for 45min+ with no answer or clarity on the situation and using my cell phone adds to the expenses that Telkom will never own up to.