I’m going to echo the others. It’s not what you want to hear but in this relationship you were abusive and a jerk. Your ex is perfectly within his rights to not want anything to do with you and it sounds like he’s made it clear that he doesn’t.
Forget the stuff (unless it’s precious jewels or a Picasso) and move on. I also think some counseling would do you a world of good both to help you cope with your dad’s death and your mom’s poor health - my father died recently, I do know how tough it is. That being said, I certainly didn’t go off on my husband and act like a jerk because I was sad.
You behaved badly. You need to live with that and give this man some peace.
Is there some mutual friend who can arrange to pick up your possessions and then meet with you?
Let me add that I agree with what others have said - this relationship is over and you need to move on. Don’t try to use your possessions as an excuse to try to revive it.
The first thing I thought when I read your post was what would I say if I read a post from him about the relationship, the breakup, and your current behavior. Just based on the information you provided, you don’t come off looking like a good partner to have. I (and from the looks of it pretty much everybody else in this thread) would have told him to break up with you, maybe send you a note telling you to stop contacting him, and depending on how many times you’ve tried to contact him maybe even seek a restraining order. As others have said, it’s time to forget your things and move on. Learn something from this so that you’re not back here in 3 years with a similar thread about another guy who put up with angry calls for a full year.
This. Don’t make him pay to ship your stuff. If you really must get that stuff back, send him a prepaid mailer/box of some sort to help the process. Chances are, your stuff is already gone and will never be seen again - much as I suspect this poster will be never seen again around here.
You treated him like shit. You may have had an excuse, but are you really surprised he moved on?
Let it go, it’s just stuff. Unless there was something of high monetary value (electronics, a car), just write it off. Do him a favor and stop contacting him. You aren’t likely in a mentally healthy place to be in a relationship anyway. Try dating around, see if you’re ready. It sounds like he moved on a long time ago after you mistreated him in a way resembling how he’d been mistreated by another.