Refusal to Refund money

I bought a Voucher from Groupon which due to service related issues with the supplier was cancelled for me by Groupon. However Groupon credited my account with the R695. After several email requests they still do not want to fund the actual money to me. It is quite a substantial amount of money now laying in a virtual account which they are now basically forcing me to use to purchase other vouchers which I feel is unreasonable as I had to pay with actual money for the voucher.<br> <br> Groupon does not respond to my numerous requests I have sent through for this refund.<br> <br> It has now been the 3rd time I bought vouchers through Groupon which was a complete waste of money.