Bad customer service by manger

I bought blinds at PEP EVATON Mall on Wednesday when I got home unfortunately they were the wrong size and I had already thrown the slip away so on Thursday I went back to exchange them as they were still intact with pricing and PEP sticker on them... The cashier called the manager who had no name tag on and her mouth and nose was uncovered the whole time, everyone had their masks on except for her... She told us she can't help us without the slip and she sent us to the bank to do a bank statement unfortunately we couldn't get a statement with purchases from the ATM and I could go inside as I didn't have my ID, so my daughter and I went back to the store and I was getting frustrated and I told the lady I'm gonna contact hello Peter l, only then she was keen to help me without her mask on still... She told me she needed to call her regional manager first, I spent a whole hour in the store before I could get help... The cashier Pinkie was so nice and she tried to assist us to the best of her capability, she had more customer service than the manager, infact she should be manager of that store... They will have many feet, as upset as I was she was able to link sell me a hanger and I bought it, she's that good as for the store manager I'm disgusted by her customer service and she even **** saying she couldn't reprint the slip but aat the end she was able to.