Nope, you do not have the right to know why. Sorry. In an ideal world you should, but sorry, nobody has to tell you anything. If he want's to completely blank you that's up to him. Yes, it means he's unkind, but that is his choice. A normal reaction would be to walk away after three or so weeks of this as it's getting you nowhere. He is simply not worth all this distress, am sorry you can't see this.

I hope you don't sit and stew in an angry pot for too long and find some peace with this soon.