So, I'm at the TV wall, talking to a customer, showing him a copy of the ad, discussing some of the TVs we've got on sale. This guy comes up and, gruffly, says "Hey, can you help me get this TV?" and points in the general direction of the multitude of television sets we've got. I looked at him and said "Sir, I'm with another customer, I'll be with you as soon as possible or one of the two associates over at the desk would be able to assist you", pointing at the desk about 20 feet away. He gets a 'tude and, rather loudly, says "Forget it, I just won't buy the damn thing. I just needed it unlocked anyway!". I reply "I'm sorry, but I don't even have the key to that. The two guys over at the desk have that key." He screams something and storms off...
...to the front desk where he makes a complaint that i actually told him I wouldn't help him because I was with another customer.