So disappointed with Groupon

I have recently become a Groupon customer, and have made about five purchases in the last two months of 2015. The first one was a service, which did not go well, as when I got to the hair appointment, I had to pay full price anyway... so that was a waste. The second one was a gift and was received damaged (facial products), and the others were Xmas gifts which was ordered 4 Dec 2015, but I only received the one yesterday (6 Jan 2016), and now they let me know I will not be receiving the second one.. SO DISAPPOINTING!!! Apparently I will be refunded, but that is not the point. The point is that I had to contact them to find out what was happening various times (probably 30+, no kidding) before someone got back to me, plus they state delivery takes up to 10 working days.. it has been a month now since ordered... and now I will not even be receiving the products. This is HORRIBLE customer service PLUS extreme carelessness towards consumers. Highly doubt that I will ever make use of them again, and I will tell everyone else to avoid Groupon as well.