Please help!!!

Hey everyone, I'm brand spanking new to this forum. I have a German Shepard, Pembroke Welsh Corgi and a Bichon Frise. All of which are about 2 years old and all boys.

These dogs haven't had any other real training other than sit and down and no and to relieve themselves outside. But they are starting to become a big pain. ESPECIALLY the Corgi.

The German Shepherd was the first to come to our house and he was such a good dog! Listened and never had an accident in the house after the potty training. Everything was going well until the problem child came and that's the Corgi. He is my sisters dog and with her he is pretty good. But with my mom, dad and myself he's a nightmare. He's pees in the house all the time, we've caught him in the act many times and we did the whole "put his nose in the pee and spank him thing" but he could seriously care less, he does it anyways. It's gross sitting on the couch and smelling dog urine. They pee on everything in our backyard. We have our cars back there sometimes and they pee on the wheels, all three of them. They pee on the walls too! The whole pee thing started with the Corgi too! He taught the Shepherd and the Bichon these bad habits. And it makes me so angry that this happened.

The Corgi barks and barks and barks, and when we play ball with our Shepherd he plays too, but has no intention of going after the ball, just snapping at the Shepherd and biting his neck, which ticks off the Shepherd and results in fights sometimes. If we open a room door he shoots in as fast as he can, or if he is outside and we want him to stay there but open the door he shoots in .

Every time I try and attempt to train each of them, I feel like I'm talking to a wall. I feel as though they don't take me seriously. ALSO the Shepherd thinks he is the alfa and that needs to stop, but I have no idea how to push him back down in his place. The Bichon too, he barks at stupid stuff, and when we tell him "NO" and to stop braking he keeps going and going. He doesn't listen. Neither of them do. I'm so desperate, it's horrible having dogs that don't listen and then walking into a house that smells like pee, I feel like they've taken the house from us and it's their playground. I can't trust them to be by themselves for fear of coming home to a huge pee stain or a big pile of baked goods. It's so frustrating. I don't know how to get to them. please help!!!!!!!!!!!!!!