I purchased a Zupapa trampoline on Amazon and it was a very easy installation though it's a 15 feet one. The kids love it. Then (due to my fault, improper handling of snow) the poles have bent. I contacted Zupapa customer support and their representative Jenna was very helpful and did everything to make sure that I select the proper poles and then shipped them to me. I am highly satisfied with Zupapa service and Jenna's responsiveness and willing to help.