Groupon Service Appalling

I ordered a gazebo from Groupon on 27/11/15 and delivery was to take place within 14 days. called them on numerous occasions to no avail, as they were supposedly receiving high call volumes. Sent them an email on 18/12/15 and did not receive any response. Called them today and was told that the goods were out on delivery between 16-18/12/15, and the courier company was to have let me know that the goods were damaged and that I could have a refund. The agent asked if I would like for him to source the goods and will get back to me within 48 hours. I find this service unacceptable and appalling.