Why treat Blacks like ******?

I have been meaning to submit this complaint for some time now. I have been a client of Pick n Pay and quite frankly prefer to shop there than at any other retailer. What irks me is for retailers to apply policies that appear discriminatory and simply based on skin colour. Your shop in Dobsonville (both groceries and liquor), demands to check till slips without exception. About a month or so ago I declined to give the guard the slip and he pulled back my carry bag until it was torn. On the liquor side the guard stands right in the middle of the door and customers have to squeeze past him. I was told that this is done at all small stores and I have been checking when I go to similar size shops and found to the contrary. It is only app**** in the townships. I understand the business needs to be vigilant, by are Blacks generally ****s? Makro check slips at all their stores and I do not object. Why? Because they are discriminating by area or possibly skin colour. Can you please review this policy and treat us with some dignity?