No Response or action regarding refund request

I purchased a Groupon Voucher but have decided to cancel and requested a refund. I requested the refund on the same day via email and have not received a response (28th April 2015).I have sent several more emails requesting a response have gone unanswered (5+ emails have already been sent), I also called and was told I needed to email in order to receive a response. Groupon has a clear cancellation policy in place on the website but it is clearly just for show as no one enforces it. <br> <br> Eight days have now passed and I have still not received any calls or response, even though their automated emails say calls within two working days.<br> <br> R.Sonday on behalf of S.Hartley