Prize spins not giving me my credits

I have done 5 prize spins all earning credits but the credits never added or showed I even got 2 prizes where I got cars and credits but all I received was the car and no credits the worst one was not obtaining my 1.8 million credits I’ve gone to menu to see if spins didn’t go thru but they did I even got an achievement for 25 spins but my credits has been stuck at 300k is anyone else having this problem ?? I’ve also reset my game and my Xbox but no luck

http://forums.forza.net/turn10_postst42000_VIP-Spins.aspx