[Blue gumdrops]

My dog is untrainable. I know everyone saids no dog is untrainable but trust me my dog is. Nothing works and I'm getting impatient. He's at the point of biting ALOT. I can't take it anymore as we all bleed and hurt from it. When he has sown thing in his mouth and we try to take it out or try to let him drop it on his own which will take up to 10 mins, he will bite us really hard and growl and squirm away. As I'm walking he bites my shoes and growls as I try to walk away. Sometimes I stand there and ignore him so he knows he's not getting any good attention from it. But that hurts too as he's biting my foot. If he's behind us he bites our ankles hard. Sometimes he just bites us for fun and as I said I can't take it anymore. I don't have the patience and it's so stressful as I have classes to worry about too. I literally can't have him with anyone because of his bad behaviors. I'm not seriously considering giving him up because I'll forever regret it but I just can't anymore and I don't know what to do. I don't know if I should go to training classes or not and how much are they? I need advice that will actually help me. And I know I'm not the only dog owner that gets annoyed and frustrated. I'm trying.