Game Stores Walmart Biased towards loyal customers

There were unmarked microwave ovens on sale floor, upon inquiring about the price the grey eyed Indian female MANAGER told me that I cant buy one because a man that stood next to her had already bought all seven of them, I protested saying that how could he buy all surely he is a businessman and is buying it for resale and that was not fair to the other loyal customers like me, she responded by saying that he always buys all her sale clearance stock , I retaliated by asking \am I not a customer then?"she then said that I should ask him if I could buy one !! why should I ask a lay man standing in your store to buy goods that are still in YOUR shop STILL on display if I could buy one? HUH? I asked to speak to the manager and she responded that she is the manager and just then BOOM!! I got it"