Click my tongue

It is not often that you find kind welcoming staff in stores these days. They seem to have long forgotten that is the customer keeps the stores doors open and pay their salaries. Today I visited your Greenstone branch and I was assisted by Nomsa Nomak. My son was standing in the que waiting for me to join the que to pay. Another lady then joined the que behind my son. While I was joining my son in the que, Nomsa came by and told me that the que joins from the other end, I then told her I am aware that it does but I am joining my son in the que. She once again told me that the que starts from the other end and I again told her that I am aware of that and my son has been waiting in the que. she then proceeded to clearly click her tongue at me. I was then her next customer to serve. When I got to the till I told her that I do not appreciate her clicking her tongue at me, she ignored me. I then told her that she should apologise or I will report her, to which she continued to ignore me and she did not apologise. This is not the first time that I have had rude, disrespectful service from Mr Price. It is is in no way acceptable and I will stop supporting your stores if this ever happens again.