Rented a film to watch tonight. Put it on and the movie wouldn't play. When I pressed 'play movie' I got some director's commentary 
a documentary about the whole film. scrolled through, thinking perhaps the film came after. nope. restarted it, thinking maybe I'd pressed the wrong button. Nope.
Took it back and said it isn't working, do you have another copy, or is this perhaps one of 2 cds I was meant to be given. Woman said "I don't know. the machine tells me which box they're in." in a couldn't care less voice.
I said oh, well, what do I do then.
She said how much did you pay for it? I said only £1.99, but I did want to watch it. She took it off me and put it back into the system as returned (normal this films been watched and returned iyswim)
well, she said, I don't know how to do refunds. You'll have to come back another day and talk to the manager.
So I go in, can I talk to the manager please, I'd like my £1.99
I'm going to look like a prat.
I'm pissed off that they took my money, I didn't get to watch my film, the shop assistant was useless and driving there twice would cost me more in petrol than the bloody film was in the first place!
And the worst bit is it was only some crappy horror film and I've already forgotten the damned title!
Mountain out of molehill?