Whenever I gave groupon a legit reason outside of expiring, they'd refund it out or give me groupon credit
I bought a massage session from LS and every time I would call to make a appt, I'd get a voicemail, tried again two weeks before the coupon expired, same thing, went to the chicks site and it said she was out of town for the next month or so
Called LS to get credit, an extension, or my money back and they wouldn't give me any of those
Since then, I don't fukk with LS

Groupon sound like the way to go