Xbox 360 Infinity Money Glitch, would like to report it.

So, I don’t have internet connection and would NOT like to get banned as soon as I connect to the Forza Servers. I did the perk that gives 25% for winning events and after finishing the Amateur Division, the game gave me 999,999,999CR. Now, I am rather upset with this, because it could be my immediate banning when I connect to the online servers, I have seen it happening on a Facebook page I am on. How do I get this resolved and reported, as so I do NOT get banned as so I am in the free and clear when it comes to this problem?