Phone the Samaritans. That's the sort of thing they are there for.
You really do need to take some action now. All of your posts are the same - listing all of the things he does/says that make you deeply unhappy, but despite everything that's been said on this thread you haven't once sounded as though you are even ready to think about changing your situation. Why not? Don't be so passive - this doesn't have to be happening to you, it's so easy to change it. You just have to make a start.
If you don't feel strong enough to tell him that it's over then don't bother telling him anything. Just stop sitting around and waiting for his crumbs and start doing other things with your life. Don't focus on meeting another man just yet, concentrate on getting more friends and trying to keep busy.
Of course once you stop chasing him he'll probably suddenly become more interested and more attentive because he'll be a bit spooked by your sudden lack of neediness, so do expect him to get a bit 'better' in the short term, if only to get you back to where he wants you, which is in a place of emotional dependence. Then once he's soothed you with a few platitudes it will be business as usual. But only if you let it. Which you mustn't.
I don't think a single person here is going to give you advice along the lines of 'if you stop ringing him then he'll ring you more often and see you more if he feels his grip is loosening.' Of course this is exactly what will happen, and it's what you want to happen, but it's not the outcome any of us want for you because the reality is that this is a very unhealthy dynamic, the man is an emotionally abusive, childish, manipulative prick, who is only with you because he senses you are vulnerable and he enjoys the power trip. it can't be turned around and shaped into anything worth keeping hold of and the sooner you accept that the better.
The last thing you should be doing is constantly ringing/texting him and counting down the hours until he's promised to ring you back, that just gives him the power to choose to ring you or not ring you, and he knows it's torture for you. You've got into a really unhealthy cycle with this. If you don't break it, he eventually will, when he finally gets bored with this cat and mouse game and moves on permanently to someone else - which he will. Don't passively/tragically sit around and wait for this to happen to you.
Just make a decision to take control of it.