Rude workers

Visited MTN at wonderpark, shop number 314 on the 7th June around 14:30. I wanted to enquire about their services but the man on the cashier tills was rude to the extent that he swore at me. The treatment I got there was unkind and I don’t think I will want to visit the shop aagain or use MTN of this is how they treat customers or potential ciatomers.