Groupon choatic service

I bought a Spa treatment voucher for R699 for Lakeside Hotel on the 13th of August 2015. Payment was made on the same day. I didnt receive any communication regarding my voucher. I called the Hotel to book a date last week Wednesday and i was told to email a voucher that Groupon sends to customers otherwise they cannot secure the booking for me. I sent Groupon an email enquering about the voucher. I received an automated email saying their response time is 24 hours. Today is Tuesday, almost a week later and i still havent received a response. What kind of service is this! Does Groupon know that people have many options in this business! Do they care about their customers! Why should i spend time writing complains to them when their service is about saving customer time and giving hassle free service. What a shame that in this day and age there are businesses who still take customers for granted. I hope someone will rectify this!