I purchased a massage through Groupon with Renew Skin Center. I was really excited because it was such a good deal. I tried for months (Feb to be specific) to get in contact with them and continuously left voicemails (it is now July). I guess they just decided not to return my calls or even answer the phone. Groupon was unsuccessful in getting ahold of them so they eventually had to refund me my money. Their website is even shut down so there was no way for me to contact them that way.
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