Sale of Goods Act and group-buying sites

Eloise32

Can anyone give me advice on something? I purchased a voucher via Gogroopie on 05 November. When I received my voucher code, I went to the merchant's website to redeem it, however the item I wanted was not available for purchase. I subsequently contacted Gogroopie to ask for a refund on 18 November. They responded to me on 22 November to advise that they have issued my refund and to allow 7-14 days for it to reach my account, once they have notified the merchant to cancel the voucher at their end. I contacted them again on 12 December as I had not received my refund at this point. They responded to me on 17 December to advise that they would have to contact the merchant for them to cancel it on their side, something they advised me that they already had done on 22 November!! I chased this up again with them on 22 December and have had no response since. I am at a loss as to where to go from here, so I have contacted the merchant direct, and have had no response from them either.