Telkom is steeling my money after I've canceled their contract

I've cancelled Telkom's service during October 2019 last year and even though I followed up the cancellation still no feedback for Telkom. Instead, three months down the line they are still deducting money from my account and for a contract that I never signed with them!! Calling their call center is one of the most useless activities I've done in my live!! No help at all, they only ask me to send the same forms again!! How many times do I need to send the same e-mail with cancellation documents to Telkom for them to end their service. Further, they only put you on hold to do who knows what and you have to listen to that wasteful tune on the phone for 15min before they come back with a useless reply. Telkom has a total disregard for the Consumer Protection Act and as I'm an attorney I'm now drafting Summons against Telkom and starting a case at the Consumer court!