Same problem here guys, had started my own thread thinking I was the only one. Having gone over this forum, there is a couple of people posting links back to another thread saying that this issue has been picked up by the devs team and they are working on it. I just really hope they will reimburse us, as I have tried a couple of times now to download a car, the game seems happy to take my tokens (when they decide to show) but never deliver the car, Im currently down something like 1,978 tokens, which in real world terms is over £10.
Here is that link to another topic I found here, hope it offers some solace to you / us.
http://forums.forzamotor...working.aspx#post_255233all the best