Went to purchase an item on clearance, the cashier refused to honor the price on the sticker saying ...

Went to purchase an item on clearance, the cashier refused to honor the price on the sticker saying that it was a mistake. They then said they could do a % off of the full price which was $40 according to them. When I looked the item up on the target website (and across other stores websites) the full price of the item was really $22, so they were not owning up to their mistake AND fabricating the original price to get more money. I was a regular target shopper but this was petty/distrustful, do not want to give them any more business.