CarMax review: I asked to contact the manager, but I heard only promises

I got the coupon ad tried to use it, when I wanted to buy some stuff from the company Carmax Lax Store. The rep refused and told that the coupon was fake. I asked if it was possible to speak with the manager. The rep told “yes”, but after that I heard only faint promises that the rep would contact me soon. No one called me back and the coupon was already useless, ‘coz it expired. Please leave comments about this company, because people should be aware when they deal with such irresponsible people.