I also bought a voucher from Living Social for 3 man hours of cleaning. I've called numerous times, but the voicemail just goes to a generic voicemail box. There's not even any indication of this being a real business. The website listed was also defunct and just redirected to the company that sells websites.
I called Living Social to get my money back. The girl I spoke with said she recalled helping someone else who had problems with this same company. Living Social did refund my money. They offered to try to work with the company to "resolve my issues", I said though that with how sketchy this was, I'd just rather not have them in my home. She said that occasionally a company they'll work with does get overwhelmed with the influx of business. But it seems to me they should put a cap on the number of vouchers they offer then.
At any rate, this company is at best unreliable and unprofessional. At worst, it's a scam. Either way, I don't think I'll be recommending them to anyone I don't hate.