I have messaged a few guys on Facebook, and it shows they have "seen" my message, but they have not responded. I went as far showing my interest, gving them my number, wanting to talk and get to know them better. But they have not contacted me through Facebook or phone. What did I do wrong, will I hear from any of these guys?
More than likely they won't contact you. I recently did the same messaging my HS crush but she never responded even after she had seen it. I posted a question about it as well and a couple of girls gave opinions to why she didn't respond.
The guys might think you're a catfish as well.
Don't sweat it, there are other guys out there who'll be interested. Don't waste your time on people who aren't interested in you.