WORST CUSTOMER EXPERIENCE

I have been a loyal ackermans customer and account holder for the past 8years, in those 8years I have used my card at Ackermans mahube for 7 of those years, it was since last friday when I recieved the worst customer service at an Ackermans, I went to Ackermans Mams mall looking for a green t-shirt and got it in store, but when i got to the till the lady said she could not sell it to me and I told the lady I needed the t-shirt and she crabbed it from be and tore the tag and said she will not sell it to me. I was so upset I did not want to cause a seen and left, but I was not happy with the service I received, it was not my fault that they left it in store when they should have packed all the summer clothes. I did not get the rude lady's name but she had an unusual hair cut.