Still Awaiting Delivery of Purchased Goods

I purchased a Groupon on 30/03/15 for 2 sets of 9meter white LED solar powered fairy lights with free delivery within 2weeks from date of purchase.<br> Incorrect items was delivered at the provided address the 13/04/15, the items was CHEAP COLOURED ELECTRICITY POWERED fairy lights. I informed the suppliers of the mistake as per the groupon voucher, the costumer need to sort it out with the supplier (Magic In A Box). I was later advised that the items will be collected and as soon as they received the faulty product, they will dispatch a new parcel. I informed them this is not faulty items it is INCORRECT ITEMS. <br> Making a long story very short - I have emailed Groupon and requested they help to resolve this matter as in my opinion they cannot just collect the monies and take no further responsibility. The voucher has been redeemed and still I have not received my goods I paid for. <br> This is extremely BAD service and due to a mistake on Groupon's side you are making a lot of unnecessary hassels for me.<br> I need this query sorted out ASAP or please refund me in full, please stop emailing me with promises and please give me what I paid for and deliver the items as advertised. <br>