Speed in Food Mart

Very rude customer service, no cash back, and a minimum 8.00 purchase to recieve cash back or even use a debit card. I asked for the manager and someone by the name of "Imu" or close to that said I am. I asked for his supervisor and he said there was none over him. He then asked me to step aside. I couldn't believe it. I really hope he is not the owner and I'm sure if the owner knew that is how the gentlemen is running his business, he would not approve.