Rude consultant

Hello "The Unlimited" company.

Today in the afternoon, I received a call from your call centre from this number ***, it was exactly at 16:09 unfortunately I can not recall the caller's name. He called me, referring to me with the wrong name and surname claiming he got my contract details from my friend whom I do not know because I don't know that person's name who supposedly my friend. When I told him I am not the person he is looking for, he asked who am I... Again I told him, I think you have the rong number, he then said to me "waze wayitshela bo ke nawe" now I would like to know from the company, is that how you train your consultants to speak with us? Why would a well trained employee, in the name of a company, on a recorded voice call behave like that? Are they even aware they are a company's image? Honestly, this makes me wonder what kind of a company is "The Unlimited" I would appreciate if you can trace him, get him to call me and apologise. I am not one of his peers to speak to me in that manner.

Thank you, looking forward to hear from you soon.