My Dog Was Attacked By A Pitbull Please HELP

My dog Hyundai was attacked by a pitbull 2 days ago and I need help for his surgery. I was walking Hyundai on a leash and pitbull was lose with no leash . Hyundai has a 4in open wound on his private area and bites on his neck. And a broken leg and dislocated hip but still in the hospital and still at the far east pet hospital recovering