No service, after supplying defective floodlight.

I bought a LED floodlight from Magic in the box via Groupon on the 19th of January 2015. I installed it and it worked for all of 3 seconds. I informed the supplier on 02 Feb 2015 and received a confirmation from Samantha (support team) that they will have to send a replacement unit, no action. I logged a call with Groupon, who arranged to pick up the faulty unit, the unit was picked-up on the 13th of February. Since then I have not received any feedback from Magic in the box at all. My attempts to establish contact with them failed completely. The *** number on their website does not work at all and my e-mails are not being responded to. I tried to get hold of the Customer Services Manager Peter van Zyl, but could not reach him either. At this stage I am not sure if they are still in business, however I see that Groupon is still advertising some of their deals, which should be a concern to potential buyers. Can someone from Magic in the box, please tell me when I can receive the replacement light or my money back.