Hi and welcome.
No, I don't think he is "rebelling", per se. I think he is acting out of fear and confusion with your father. Puppies are born knowing nothing that we, as humans, expect from them. It's very hard for them to understand how to do things just right sometimes. It takes time, and a ton of patience.
Does your Dad understand how potty training or dog training works...? I have a puppy trng guide I can email you if you PM me your email addy. It's from
this thread.