Terrible customer service

I took a contract with Telkom and received my Lte router.I have been trying to configure it so I can use it but that failed so I visited Telkom at Phoenix Plaza to do a sim swop(as that what I was told when I called Telkom).The lady who helped me,first of all,had no name tag and when I asked her for her name she claimed that her name was Prudence(she refused to give me her surname).She had a terrible attitude and was reluctant to assist.Due to her terrible attitude I had to then go to the Gateway branch at my cost which was very inconvenient.I have no idea how Telkom can employ people which have no customer ethics!