Telkom incapable of cancelling LTE accounts

I have been trying to cancel my month-to-month Telkom SmartBroadband Wireless contract since December 2017. After submitting the required forms and documents to ********** multiple times, calling the call center multiple times, and going to the Telkom store, I am still being billed and the account is still not cancelled. I have even logged disputes that no one has bothered to resolve (the last one was ********** 0).

One can only conclude that the "retentions department" is in fact mythical, and that this Kafkaesque bureaucracy is simply there to keep extracting money out of people gullible enough to purchase Telkom's mobile products in the first place. If you're thinking about buying one of Telkom's LTE products, please understand that this may be for life.