Amazon will bend over backwards for returns or exchanges. They get all over their sellers to correct the issues when it's a used item and they always usually correct the problem. It's unreasonable for you to expect that they help you out after you've had a big item like this for over a year. Why you would purchase a big ticket item like this and not at least take it out of the box and test it immediately I have no idea. But it's not Amazon's problem. You messed up here.