Adidas cashiers need customer service training

By far the worst servive i have ever received!!!! I went to Adidas purchase a pair of sneakers for my niece on Monday and when i paid they gave me a box with no lid/cover and when i explained to the cashier that it was a gift and asked if they had an extra box she just responded and said " you just javr to buy one from one of the gift shops" ...i let that go even though i was not happy

I latet disvovered that my niece no longer wears the size i got so i decided to return the shoes for a refund on Wednesday (today) .... so i went and requested to get a refund coz i couldn't find anything else that i liked .... the cashier told me they dont have cash to refund me and i should just go walk around the complex and come back later maybe they would have had a cash customer or alternatively they can refund the money back to my card which will take 14 working days ...i then refused and told her i cant accept either of the "solutions" and requested her to make a plan ....and guess what? The money mirraculously appeared in her till.... that was after she made smug remarks about me in the background to the other cashier ...Certainly not buying there ever again