This isn't OK for my dad to do, right??

That was very wrong of him, and you should have let them file a report against him. Abuse is wrong, and you should not tolerate his abuse. It doesn't matter that he said he won't speak to you again. Isn't that better than standing there and letting him take advantage of you? If you are of legal age, I say move out as quickly as possible! Or get help. Maybe you can live with another relative.