false advertising

Wanted to purchase a shirt which was on sale with a red dot amongst the other sale items. The sticker was then taken off in front of me with the sale assistant saying that this shirt was no longer part of the sale. However, there were a few of the same shirts in the sale section with the same red dot sticker. Assistants were reluctant to accommodate the situation. So much for customer service. I'm very upset about the rude manner in which this was handled as well as the false advertising.