Quote (D20 @ Aug 29 2013 11:23am)
... It's called calling Microsoft support. Try it.
this ^
After h4 was released they later released a map pack for sale and accidentaly let everyone download and use it FREE. Later they made you either delete it or pay for it to continue playing online. This sounds like it may be a bug or glitch and they think you have the free map pack. Just give them a call and explain. As long as you payed for any extra content then they should be able to resolve this