I just sent a 5 year old to time out and he sat there for a minute and said he didn't want to be there and left. I have physically put him in time out and held him there, threatened to call his dad, yelled, and even tried to be nice. At his moms house he runs the show and is just a plain a-hole in general. I don't know what to do to get this child to listen...please help me 😖

edit: we also added time each time he did get up in time out and it got all the way up to an hour