Quite possibly they're blocking because of their own lack of communication or not wanting to face the truth or their own issues.
Perhaps it's not something you did or didn't do, and not you.
Perhaps it's them and on them and not personal at all.
Just some thoughts.
Welcome to Twitter:
Where you can communicate with people around the world,
You can form friendships for life and even like and love people, get Twitter crushes, and flirt,
And you can be supported by friends or people even more so than your own friends and family at times.