Family Dollar complaint: Rude, unfriendly,angry manager..his demeanor was horrible

I went to the store Saturday, I purchased a buy one get one half off toilet tissue, but because I used my $5 off coupon, I couldn’t get the sale. The cashier was very nice on Saturday. So she said I would have to come back Sunday to get my refund. She said she wasn’t going to be there so she notified the manager…..same guy, same mean look…not friendly at all. So Sunday I came back to the store approx. 1:30-2:30. The cashier had to call him from the back. He didn’t speak, smile, or anything…still had that mad at the world look. I ask was he having a bad day. He didn’t say thank you after he proceeded to give me my receipt. He said Your refund will be returned within 8-10 days, and walked off. So I asked the cashier what was his name, she said she couldn’t give me his name. So she asked if I wanted her to call him. When I asked his name, he got very offended…I don’t know you and you don’t need to know my name, was his response. I said I just wanted to compliment you on how clean and nice this Family Dollar was. I asked him is it my race….he said no, I’m not racist. So as I was walking out a Hispanic male walked in and the Manager spoke to him in a friendly voice….so I said Oh, he gets a nice hello ..he then said bye, have a nice day ….only after he knows I noticed he didn’t treat this particular customer, like he treated me. I can’t believe Family Dollar would allow him to be a Manager. They didn’t even have on badges. The customer service he portrayed, make Family Dollar look really bad.