Bad attitude and disgusting service!

Went to Vodacom Campus Square yesterday, stood there waiting for assistance as everyone was busy (fair enough). Finally someone was free to assist, his name is Martin. He didn't look and sound interested at all, I asked him about a prepaid and contract swim swap. He explained everything to me, I then asked him what time does the shop close he told me. I went to get the documents, when I came back a lady was available, went to her and she referred me to him. The way she referred me to him sounded as if it's a lot of work to do a swim swap and she was also not in the mood to do it. The guy reluctantly assisted me, his face was of a person who's really not customer centric, he never said anything to me through the service period, the only time he spoke was to inform me the system might be off but he'll try and asking for my documents. He gave me my sim card, no thank you no goodbye .. no acknowledgement whatsoever. Whilst busy with me a guy was waiting to be serviced of a race that I won't mention, he then informed him that someone will attend to him, why couldn't I get the same service? After he was done, he gave me my sim card and I left. Got to my place sim card doesn't work, called the call centre and the agent explained to me that I must give it some time and switch off my phone it does pick up immediately. I had to call the call centre for clarity as Martin didn't explain a thing to me. Do you train your workers on the customer service .. most of all not to judge or rate customers based on their skin colour and status? I have been a customer for years and I am disgusted.