Stop debiting me for something I asked to be cancelled!

I am so sick of Telkom and their incompetence! Worst company ever! Why the hell are you still debiting my account for a service I am not using? I sent through numerous emails towards the end of last year with th cancellation form, made multiple calls to the call center, and even wrote about 4 reviews here on hellopeter, all to get the month to month LTE service I had cancelled. This has still not been done and the bill has still been accruing. You can do what you want on your side but I will not be paying for a service I have not been using and asked to be cancelled. So stop debuting my account!!