I think gift vouchers make amazing presents but it infuriates me the way some places put a six month expiry on theirs. Mine is from an expensive day spa and I just assumed (never assume!) it was 12 months and now it's expired. Grrrrr. Been on their website and there is no mention when you buy them up front that they are only six months validity, I went to "purchase" one and it took me straight to PayPal so obviously it's very fine print.
I sent cent a polite but obviously irritated email to see if it is negotiable, it took a lot of control not to rant and rave via email but I think it's best to start with a reasonable enquiry first. But I had to get it off my chest. Very wrong.