MTN customer service sucks!!!

Worst service and experience i had with MTN South Africa. Ordered a router online about 2 weeks ago. Router got delivered last week Monday by DSV, handed them all required documents. Next day called cause router was not working and a lady assisted with RICA and said the router should work. It worked for like 30 minutes amd stopped working, called customer care and got transferred to connectivity department and was told that there is a location barrier and that it was removed, and again router worked for only a few minutes. We called again for about 2 to 3 times only then we were told that we have to update our address cause when it has a barrier its only gonna work for a while then gets blocked again. (1st consultant should have known this) kept calling on a daily basis until inspoke to a lady called Nthabiseng who asked for me to send a pin location so they can update my address and that it takes up to 24 hours to be updated. We shared that with them (manager didn't even acknowledge that they received the message) and still 24 hours later still no internet, we on the 5th day since I received this router i called again spoke to a guy named Thato Mamabolo who then assured me that one of his managers will call me asap. (till today I'm still waiting for that call) I even went to Facebook to express my dissatisfaction, i was asked to inbox, inboxed still nothing came off that.