Terrible service

I Went to do my shopping and one of the items I wanted to buy was a 2kg chicken bag. I didn't realise until I got to the till that it actually didn't have an expiring date. I asked the lady at the till if they can exchange it for me for one that has a date. She then called one of the ladies in front and told her to go and change it. That lady gave me such bad attitude and said who in this world takes meat and not check the date. I said to her im sorry I forgot to check. she rolled her eyes and went to change the bag she took such a long time only to come back with a wrong bag which had only wings. I then said sorry that's not what I wanted I want exactly what I gave you to change which was the mixed portion. she said No all the mixed portion don't have dates so I left. I told her to rather bring then because I really don't want wings she made this loud Ahg! sound and rolled her eyes again as she went. she eventually came back with a right bag but just threw it on the counter in front of me. she threw the bag so hard it left me traumatised I called the supper visor to come and assist she made the girl to apologize but I was so disturbed I just left everything at the tills and left.