Continued Network Issues

On the 19th of June 2015, I've lodged an online complaint about bad reception and internet connection. I've received an almost instant response saying that my complaint will be fully investigated and that i should receive feedback within 5 working days. It's been almost a month now and still no response. I keep calling the 173 customer care number, but they always say that they're experiencing high levels of calls and i sometimes wait for as long as 5 minutes before hanging up. It seems as if some areas get preference above others. Poor customer service is a very bad reflection, but all I've been seeing lately is that MTN can't keep their customers happy.