Humiliation at Shoprite bambanani shopping centre.

As usual,Last Friday I went to the shoprite store,a lady named Pheladi walked to me and started asking if my bum was real or am I extending it with tights,as she sometimes doesn't see it...depending on what I'm wearing. Sarcastically,I asked if she wanted to test for herself and to my amazement she did... I felt so humiliated by her conduct...to think she's one of the staff members whom I've seen to be helpful,while she's been doing it to observe my bum. I want to go there to buy juice,but I'm hesitant as I don't want anyone treating me that way.