Terrible service and special treatments

SPAR in Melville I was disappointed when I visited last week as we were all in line and a celebrity was behind me then this cashier opened her till and called this celebrity behind me helped him and closed her till which was for me terrible service and unfair treatment. When we are at SPAR we are all customers and no one is treated special. What disappointed me again is that when I want to do a Cashback I have to buy something as I can't do a Cashback only without buying, that was a first for me...