BAD ATTITUDE LEADS TO BAD SERVICE

I have been a customer of Mtn since its inception, my daughter an employee of theirs for 14 years. We went to the store opposite Clicks on 21/08 to do a simswap on my iPad. During the opening conversation, after about 30 seconds, the sales assistant launched into an unprovoked attack and very aggressively accused my daughter of being rude. After being asked to repeat her statement, she was even more aggressive and arrogantly identified herself as the manageress. When told she will be reported for bad service as per Mtn's policy, she flippantly rep**** that we were welcome to do so. I can honestly say that I have never been treated in this manner at any retail store, ever. We immediately left the store, reported the incident telephonically to Mtn and thus far have had no response. The sales people are Mtn's frontline, so what does this woman's attitude say about this company?