Don't be afraid of leaving an FC if it doesn't suit you. Some of them do massive recruiting, I'm guessing to build their pick of players for activities like raids and to raise their stats on the company boards and tend to limit their activities to those particular concerns and never address the rest of the company. I'm at my third, and while one or two of them are pretty awesome, the rest do tend to treat my messages as invisible. Sometimes its just a matter of trying to work with it or waiting for a better one to come around. If you're in a party you can actually ask people if their FC is open to new players. Each player also has an 'Examine' submenu where you can look at their FC company profile and see what their goals are even before that.