LOADING BUG!!!!!

I STARTED A TFT GAME AND IT SAID 100 PERCENT BUT NEVER LOADED I WAITED A LONG TIME AND NOW I TRY TO RESTART AND NOTHING IT JUST HAS A GAME IN PROCCESS SCREEN AND IM LOCKED OUT CANT PLAY ANYTHING AND THE DUMB GAME NEVER EVEN STARTED THIS SUCKS MAN PLEASE HELP!!!!!!!!! ITS BEEN A HR ALREADY TOO SMH.