Sick Of MTN Bad Service.

So customer service in South Africa gets worse and worse every year. But I think the last year MTN has taken the “We don’t care about you” attitude to a whole new level. I have upgraded to an new iPhone about a year ago. Since the upgrade my new phone only works When it is connected to wifi. Any aps running on data like Facebook, Youtube, Instagram or Pinterest is completely unusable if I am not on wifi. I have complained about it to MTN so many times I lost count. Every time I get the same stupid answer from one of their “so called” service champions who, if I may ad, treat you like you are wasting their precious time or something. And that answer is that someone will get back to me shortly. Well a year has come to pass and I’m still waiting. I went into an MTN store an I had to stand there and wait while three staff members have a private discussion for 15 min about their upcoming weekend plans before someone who, made it very clear to me, that I am nothing but an inconvenience to her, when she dealt with my complaint. And guess what,? she will get someone to get back to me. I can not use my phone. The phone I am paying for. Paying for a service they are legally obligated to give me, because they took my money, which I a am not getting from them. Yet every mount about 4 days before my account is due, they hold out their hand with the sms saying “ pay or we disconnect your service” What service? Can we take them to consumer court? What am I to do?