GROUPON: 7 months and still awaiting refund!!!

<p>We bought two vouchers for a 60-Minute Scenic Peninsula Flight in December 2015 which cost R4999 each (total of R9998). Due to unforeseen circumstances the plane was not available for the day we had booked in February 2016. We were a group of people on holiday in Cape Town and did not have the flexibility to avail this flight at another time. We were advised by the service provider to request a refund from Groupon. We then contacted Groupon to process a refund for both vouchers and initially they provided credits worth a total of R9998. We later contacted Groupon and requested a refund to our credit card and not credits on Groupon given that we were not responsible for the cancellation. We have been told numerous times by Groupon that the refund has been processed and that it will have reflected on our statements and it has not appeared on either of our statements to date. I requested a proof of payment and I have not received any such proof. It's been 7 months what is going on?? I am appalled with the service I have received.</p>