I bought an awning from The Home Depot. It proved to have a serious installation design flaw. Installation brackets prevent the awning from closing to within about 2' of fully closed. AwnTech, the awning's maker, didn't give me any tech support when I called or emailed them. Their "tech support" was simply a young woman, who could only tell me "be very careful" when working on the awning. Even when I went back to The Home Depot to have them call AwnTech for me, their operator told us they were out to lunch, at 2:30pm. And never called me back.
I got a standard "The Home Depot" email request to rate the product. I rated AwnTech's tech support poorly. But The Home Depot rejected my review, even though it was accurate and cool headed. They did not want to hear any criticism of AwnTech's tech support. Never mind that I'm stuck with a big problem. I can fix it myself, at a cost.