Bad management skills

Worst service ever, if its not the queue management, then it's the unwillingness to help, was at the store on Friday bought a few items which included a beanie set for my daughter, however at the till it did not scan, made a joke with the cashier and said that means I get it for free, he then entered the SKU still nothing after which the manager came and said it cant be sold it's old stock, has to be donated. how when it was on the floor and last week they had a few more on the floor. I told her I specifically wanted that coz it was for my daughter's school coz they wear navy blue.when I argued it's not my problem the staff does not check such or make sure old stock is removed from the floor. As a customer if I see something in a store at the price I see I'm entitled to pay for it cause it wasn't damaged or anything. then she realized the sticker on it was a pep store sticker, I told her it's not a pep item coz when I checked it last week it had a ackermans sticker on it, she said do you understand we cant sell it to you😳 I then called the customer service line and the lady said she'd get back to me as soon as the matter was resolved, 24hrs later I'm yet to hear from them