I purchased a Groupon recently. The Groupon was for a $5 metal print. I attempted to redeem it the same day I purchased it, which was a Sunday. No go. I attempted calling Printerpix, what a fiasco that was! On my fourth attempt, which included over a half hour of wait time, I spoke to a gentleman who said "sometimes they take a day". Great. That information would've come in VERY handy at purchase. I attempted to redeem it a day or two later as per the rep's advice. No go again. I called again and had to wait again. Not fun. Second time I was advised to try a different browser. I tried that. No go. At that point my frustration level was maxed out for a $5 purchase.
I sent two emails to Printerpix to this effect. The response I got? Crickets.