Groupon-terrible customer service

Groupon has the most pathetic customer service ever! I ordered a folding table on the 21 July 2015 and received an e-mail stating that I would receive the item within 2 weeks. When I did not receive the item after 4 weeks I called the customer services number (bear in mind I called from my cellphone and used a considerable amount of money in airtime due to me holding on for such a long time) I was told that the item was dispatched to the freight company the day earlier and I should receive it in a few days. Today almost 6 weeks later I call the call centre yet again to find out on the status of my delivery, after holding on for what seemed ages and using up a considerable amount of airtime yet again I'm told that I will be refunded as the item is out of stock. I was put through to a supervisor/manager who said there was nothing that can be done except refund me. So at the end of the day, me the customer loses out not only on my time and frustrating waits on the phone but also on airtime and now bank charges too. The worst service ever!