I can't get back in. It keeps on wanting me to phone but never accepts my
number. It either never sends a message or tells me (even hours later) that
I am asking for a a phone check too frequently which could not be the case
because they have never once actually texted me.

I would change the security settings if they let me in. My password has
been changed at their request four times, but they have never followed
through and phoned me to check that it is me. I find that curious since my
account has been very active for a few years and these problems only began
after Christmas when I got yet another device (tablet).

I can't even notify people on my FB page that I am leaving. My family is
still on FB and I joined FB to keep in touch with them. Otherwise I have
never liked it. I am switching to Google+, but only two sons are on that.
My daughter is heavily into FB and when she went to South America last fall
it was actually useful for once, to be able to chat and see her adventures
online.