my game is gone and every game i have is un downloaded

I recently played the sims medieval game i had ai9n my library and i go to play it and its just gone and everything i had downloaded, i know have to redownloaded that. but the game sims medieval is just gone like you guys stole it from me and now it wants me to rebuy the game what the * if i don't get my game back that i had already bought for 18 dollars what is going on you just stole my game im so pissed of if the game doesn't show back in my game library  i will  be deleting ea for my computer and not play apex anymore