MTN shocking customer service in KNYSNA

Knysna MTN customer service is shocking. Standing in a queue for 1/2 hour while only one person was been attended to. By the time I was served by Curlo Ruiters all the customers in front of me had walked out. I started explaining to him that my cell phone had been ****** and needed a new sim card and was bluntly told that the lines were off so he could not help me. I told him I had been waiting a long time so could he please organise a sim for me and I would fetch it tomorrow. No apology or explination and just said NO. I then asked him why he made us all wait as he could have announced that the lines were down or he had no sim cards. He said he had and also said he saw me when he announced it. This was not true and I told him so. Would I be stupid enough to still wait if I had heard him say that? I asked him what his name was and he flatly refused to give it to me, he said it had nothing to do with me. No name badge was on his clothes. I insisted again and he shrugged me off and said next customer to the person behind me. By this time I was angry and refused to step aside. He then told me he was going to fetch Security to remove me. I said you do that and he left the shop. I was given his name by his colleague who came out from the side office. Is this the way you should treat customers?