Like all retail stores, service varies store-to-store. Some general managers don't stand for this sort of "sales" at all. I know the GM I worked for at Best Buy a few years ago fired a few employees for this sort of activity as soon as she found out about it - she didn't tolerate any deceptive tactics just to make an extra sale. Just report it to the GM of that store and hopefully they'll understand one of their employees isn't worth having around anymore. If the GM isn't receptive.. just say you'll visit a different store from now on. The individual stores are very competitive with each other (since each store has the sales, services, AND customer satisfaction metrics posted for all local stores in the GM office) and will do what they need to do to make sure you'll be back at their store instead of the other Best Buy down the street.