What do I do when clean install doesn't work?

I have wasted hours over a period of months trying to install Flash. I uninstalled it. I followed every instruction for enabling it on every browser. I see that lots of people have started threads with the same problem, and the only answer I find is a link to the get Adobe page that I already know doesn't work. It is absolutely disgusting that Adobe doesn't offer phone support when so many people have the same problem. Does anyone at Adobe care? Will anyone give us a useful answer?