very Rude and unproffesional

Receive a call from durban no *** @ 6:37 pm. The guy asked to speak to me referring to my middle name which I hate with passion. I told him you may speak to so and so referring to my african name and know with. Told him I hate that name he was so rude and telling me he never asked if I hate the name and went on and on with his rude comments as if he wasn't talking to a customer who pay his wages. He later on hang up on me. 2 minute later his friend who is a lady called. Told her I just had bad experience with this guy so I don't want to talk anymore. She asked me with attitude if I was rude to him. I lost it. How can you ask a customer such question, especial an angry one. Put gasoline on fire? They need to train their staff on treating customer fairly. A customer is allowed to be rude but not them. Am so disgusted by this treatment. Wonder where they get such people who behave like they from the bushes.