Collection of Faulty Product

I logged a return of a faulty product on Groupon returns page on the 11 Feb 2016. I have followed up each week after this to check when my product would be collected as it is not working so it is of no use to me. I initially spoke to Pumza. The next week when I called back I spoke to one of the groupon consultants who was no help at all he claimed that he could not pick up the return on their system. I doubled checked the return I logged and the status was approved. I called back and spoke to Albert who confirmed the return was logged on their side and he would escalate it to the returns department. I asked to be called back so that I know what is happening. He promised that I would receive a response with in 24 - 72 hours. It is now weeks later and I have still not received a response. I then spoke to Zama who guaranteed me that the product would be collected the next day. If not I should email her. Product was not collected, I emailed her and 1 March still no response. Groupon need to collect this product and refund me. This is the second time I have this problem. The consultants are useless and provide no help!