Crashing

I was just on the second hardest difficulty lvl 60 and spent $200 on 5 necro grenades to beat the two bosses. And the game crashed. I was about to kill the final boss with regular grenades and it crashed. So I signed back in and went to play and the level reset. I didnt have my five necro grenades. I think that bs that it just takes things away from me when I would have won. Wish the game would give me what I bought but whatever.

Mr_jolley about SAS: Zombie Assault TD