No response, not turning up for appointments

I have really bad connectivity in Phalaborwa. I logged a call on 5 March. More than 1 month later, out of the blue, I get an appointment sms for 15 April at 10:00. I get a reminder 5 days later. the day come and go, with no one showing up, no response, no apologies, no feedback. its 5 days later, I still have no response, no apologies, no feedback. I have contacted MTN 3 times, tried to escalate it, tried to get the person's supervisor to call me, and still no response. <br> <br> It is more than 45 days, after the original call was logged. When I logged the ticket, I got the notification that MTN will respond to me within 96 working hours - THAT IS 12 WORKING DAYS! it is now 3 times longer, and the issue is still not resolved<br> <br> my ref no ***