NO SIGNAL IN PARKHILL GARDENS AND ZERO REACTION FROM MTN

I am a pensioner and pay MTN R 1700 monthly mostly for data contracts. Since more than a week ago I have had one bar or less signal in Parkhill Gardens, Germiston. I reported this 3 times to the coverage department and did not even get any reply. I then wrote to the complaints department and also zero replies and the signal is still non existent. I got the call center to refresh my numbers on the network and nothing improved. Worst service ever.