Can't view the people i've blocked.

I can block players, just can't view who I blocked.

Go to http://account.microsoft.com/privacy and adjust your Xbox settings. You can't completely block people from adding you, but blocking them from things like communications and viewing your profile can cut down on it.

Yeah, it was a setting. The first selection says something along the lines of "view other peoples profiles" and that was blocked. Strangely enough there is another that says "let others view your profile" and that was set to allow everybody. I'm guessing
these were the default settings because I can't imagine I'd ever block myself from seeing any others while allowing them all to see me. Lol, anyway I changed that first setting and now it works. Thanks for the help.

I've told you what to do.Set comms to friends only or block comms with these people & file a complaint against them via your console.

You can't report people on the forums.

The March Update adds better party systems.

I've never had to leave a lobby to block anyone. View their gamer card from in game and block them then just go back to game exactly where you were when you selected to view their gamer card.