Replying to NS I need your help! My bad dog.

NS I need your help potty training my dog. He is about 4 years old and still pees in the house. He is a shiba inu, we got him when his mom (who we own) had puppies. We have never had an issue potty training a dog. We usually rub their nose in the pee, spank them, and put them outside. The other dogs stop doing it after one or two times. He just won't learn, so we got dog diapers for him to avoid a mess. He will still pee in those, and if the diaper is off he will pee on things on the ground or where they are hanging from something.

Most recently he peed on my sisters new pair of white shoes that she got for Christmas. My parents and sister want to give him away. But I love this dog too much for that. Please, do you guys have any advice to help me out?