Burger King mall of the south I would never go back

I was at your branch today in Mall of the South. The staff as well as the manager was absolutely rude I don’t know if it was because I was of a different colour skin or not but she was very polite to the lady infront of me . Secondly she charged me for an extra milkshake which I did not make a fuss about told her to just give it to me coz she made a mistake on her side after the rude behavior decided to give it back and the manager was rude slamming the money on the counter and walking away I asked for the garlic dip twice and she gave me barbecue I only realized when I went out of the store Due to lock down we can not sit in the restaurant and I ordered a family meal which comes with a 2 l coke I asked for two cups in which they refused and stood there like I was going to ***** it

Please send the staff for staff training