MTN SP dont give a damn

Bough a brand new mobile phone Samsung S5 mini on 26 Sept 2014. Phone started acting up begin Jan 2015. Software problems. Phone was submitted to MTN store and send in for repairs. After numerous fone calls and visits the phone was diagnosed as having software problems and apparently fixed. Phone ws returned 23 March 2015. After putting in simcard phone did not pick up network. Lady at the shop tried numerous other simcards with no luck. Was then told that phone does not meet warrabty criteria because of a micra chip on the surface.( more a scrath than a chip). Called Thata Modise at the helplife. She just constantly insisted that fone was repaired. I asked the question how many time does the fone need to be send in. I work abroad and to be able to stay in touch with my family is paramount. The fone is now once again on its way to repair center....to be apparently be '' fixed '' again. What ****py service indeed