I know these employees are just doing what supervision demands but they really need to stop with the pushy and deceptive practices of ringing people up for services they don't want or need. This is why you're going out of business GameStop. People want to just be able to go in to a store and get the media they want at a fair price, especially on used goods and not be hagled in to services or rung up for things they didn't ask for.
You've still got a shot of carving out a niche for yourself as a chain of new and used games and hobby shops but if your going to push people to better online retailers and digital marketplaces then that's where they'll go.