MTN NORTHGATE - SUPERVISOR IS THE WORST EVER

My phone had an ******* swim swop done in Margate (I live in JHB) we went into MTN Northgate, and the service was the absolute worst I have ever encountered. Having been an MTN customer for over 20 years, I was treated with total dismissal, had to beg for help, and then met GERSHWIN SMITH (Supervisor) why this man is employed is a mystery to me! He was rude, unhelpful, made every excuse imaginable to not help me. His attitude was one of "could not care less" When I asked him for his name, he refused 3 times to give it to me! I eventually got so angry and he then gave me his name. He is not a service individual, he made us feel like we were wasting his time, despite telling him that my bank accounts were suspended due to this ******* sim swap. I cannot understand that the staff in this store are so unhelpful and as a "Supervisor" he is the absolute worst customer care person. I implore the Owner/Franchisee of this store to seriously reconsider this shockingly ineffectual and rude man as a "Supervisor" he should in fact not be allowed to deal with the public ever or at all!!! GERSHWIN SMITH is a disgrace to MTN! The other staff were also utterly without any interest in this problem.