Not even sure where to contact them about this but I guess this is as good a place as any. Like title says, I didn’t get the boost I paid for. It takes forever to grind iron in this game, so I rather not lose 500 for no reason when I just wanted to boost while I had free time this weekend.
Please send bug issues to Support.GearsOfWar.com.
That said, in this case the issue should be resolved, please restart your game.