Rude and deplorable Dimakatso at Checkers Hyper Fleurdal Bloemfontein

Please tell me if I am overreacting or not: today, was at Checkers Hyper, Fleurdal, Bloemfontein. I paid at till number 18 and the girl working at this till had a name tag written Dimakatso on it. Out of respect, good manners and pure courtesy, I greeted and she did not respond. I asked if I could pay at the till where she was working. She did not respond. Instead she nodded. Now am asking myself: were any of my actions wrong or offensive? She had such a long face as if she was smelling something very unpleasant. Since I spend my hard-earned cash at Checkers Hyper Fleurdal, I demand to be treated with respect and courtesy because that is how I treat people. For the record, Dimakatso, if that is her name, appears to be younger than my eldest daughter. Am highlighting this point just in case she interpreted my courtesy as me hitting on her. Moreover, financially, academically, intellectually and otherwise, we are not in the same class. Most importantly, where I come from I am more popular than Coca-Cola, thus I was not asking for her friendship by greeting her. This time I will not accept an apology over the phone from Checkers Hyper Fleurdal. I hereby kindly seek a written response as to how the management of the store dealt with this matter. I hope you find the above in order.