Flabbergasted by account management process

I'm extremely disappointed and disgusted in how my account has been messed, after numerous calls to attempt to resolve nothing is being done and it gets worse with each month. Even my attempt to drive to the randburg office was wasted energy as this has not resolved my account issues (after I was assured that it's resolved). Since April the going back and forth on incorrect billing and how it's now affecting my credit status.

The available channels for resolving the problem has been nothing but wasted effort, now on the 20th I've just been called by a collection company for R235. Regardless of my services being terminated I was still making payment, but nothing was done to resolve my complaints