Groupon doesn't respond to faulty items complaint

I bought a GPS tracking watch for our son on Groupon on 01/12/2015. On the 11th I got a mail stating that delivery is delayed. The watch was delivered on the 19th. On 23/12/2015 I let them know that the watch is not working. Then again on 29/12/2015, 04/01/2016, 06/01/2016, 07/01/2016, 13/01/2016 and 17/01/2016. Not once has anyone responded. NOT ONCE!! Now I'm R699 down!! These people are absolute idiots, and I will go out of my way to let everyone know to stay as far away from Groupon as possible!! I just wanted the suppliers detail, so that I could try and figure out what was going on. But instead, Groupon decided to ***** my money!! If they had any business ethics, they would just replace the damn thing!! They are directly putting my son in danger, as I bought this watch to assist should anything go wrong. Parents use any tools available to keep kids safe, and we thought this would be a nice addition for his personal safety. Not according to Groupon....they are just the same as these low life ********* that ***** children! I hope they go down in flames, the low life pieces of ****!!!! I hope you grow a pair and phone me, but the ***ards you are, I really doubt that you will!!??