When I try to join online matchmaking I have an icon that says the game is downloading multiplayer data. It’s been downloading date for the past 3 days! I CAN’T PLAY:(

Please help me out.
Has anyone else experienced this? Has it eventually came back?
I have spent 2 hours so far with microsoft live help and I’ve tried many things… NOTHING WORKS
HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___HELP___