I have used them 3 times, and the first 2 times things went fairly smoothly. But when I had trouble redeeming the 3rd lot of vouchers (with a different merchant- myphotobox), there was silence from them - you can't talk to anyone directly - it's all by email, mostly automated from them. They had the gall to send me a "how would you rate our service" email, but the "I am not happy" link would not connect! Cute. I reckon I've done my dough. Avoid them. Not worth taking the risk.