Discount tire trying to discount my offer

1 item, going that way anyway no biggie for 9 bucks, it's been sitting for a bit. Did some script drop, still there so I offer because I'm going past both pu and do on another app... As soon as I offered it made changes, 1 tire became 5 tires for same price... So went to cancel offer but roadie on a lag... After tapping a few times finally cancelled. Close one, but point is they know they're scamming the system. WE KNOW TOO!