Worst Service from Wimpy, Waterfall mall Rustenburg

I had the worst experience at Wimpy this Morning. So I walk into the restaurant to buy a caffe latte and I am then told by one of the workers that they only open at 8,this was a few minutes just before 8by the way. The lady then decided to make the latte for me (take-away). After handing the latte to me, she asked one of the ladies who had just walked in to take my payment, to which she rep**** "my shift only starts at 8, I am not yet on duty" her name is Lerato. Another lady walked in, she and Lerato then started ganging up on the lady who made the latte for me, they continued to let her know that their shift only start at 8 and should not be expected to help customers before then. An argument erupted between the 3 ladies, this made me feel so ****** upset as these people were so unprofessional and their behavior being uncalled for. I did not know that wimpy opens at 8,and was made to feel so bad for ordering the latte, nonetheless this "unprofessional, unruly and lack of customer, service" lady called Lerato proceeded to take my payment whilst arguing the fact that her shift only starts at 8.The lady who made my latte kept telling them "please treat black customers as you would white ones", but she was not having none of it. I left wimpy with a bitter taste, I do not want to ever set my foot there ever again. Please do something about this matter, as I will not rest until Lerato is dealt with, accordingly. I then decided to go back and let the manager on duty, David, know of my experience, and guess what.. I stood there for a good 5 or more minutes without any assistance, Lerato walks out the restaurant without even asking if I need any assistance or anything. David the manager told me that I am more than welcome to escalate the complaint. If Wimpy needs assistance on how to treat their clients, I am more than happy to assist. Free of charge even. Thanks