Sorry to hear it but looks like you got yourself a pair of, hopefully not too expensive, normals.
Do you mind me asking what you paid for them?
Also that note really doesnt sound legit as Freakie Frog pointed out. I could make something better looking to be honest. At least use the right font for the NERD logo, i mean come on lol...
EDIT: ouch sorry to hear that. $300 for a $30 pair of snakes, that sucks.
Sounds like the guys a real scumbag!