Groupon: Service delivery? Who cares?!

On Fri 27.11.2015 I ordered a groupon to the value of R379 for a meal for two at a restaurant. Since it was Black Friday I used the advertised code to receive a 20% discount and was asked to pay R303.20. On the same day I paid R304 (a mere 80 cents more). I forwarded my proof of payment on Sun, 29.11.2015 with ref. no. By the following Tue, 01.12.2015 I had heard nothing back and was forced to call into the call centre. I was told that my payment had not yet settled. On Fri, 04.12.2015 I still heard nothing back and had no groupon. My husband called in and was told that because the payment had not settled on the same day my groupon was cancelled and I NOW needed to pay the full amount.<br> <br> On the same day I received an email stating that because I failed to pay the correct amount, my groupon was cancelled. I was asked for my bank details so that money could be refunded. I emailed back stating that I didn't want the money back but rather my groupon as I am entitled to the discount received on Black Friday.<br> <br> I have still heard absolutely nothing back. I don't have the groupon or my money. Surely, good service delivery dictates getting back to a client and doing so in good time