Children's Place review: did receive promotion going on $20 for every $20 you spent

I when to children's place in gurnee mills in Illinois and they had the promotion for every $20 you spent you get $20 in cash money I see other cashier giving all customers who spent more then $20 when it was my turn to pay I spend $72 but like the cashier was so rude to me he just gave me my receipt and call the next customer without even saying thank you or giving me the promotion money he didn't even look at me. I'm very disappointed of Childrens place in gurnee mills.