Please try harder to get your father to understand that doctors are there to help him get better, at least more comfortable. And if he continues without medical assistance his life will become painful, worse than what it is now. You may have to set the doctor's appointment yourself and trick him into going. Perhaps if explained to the doctor's office, the doctor may see both your mother and father at the same time. At minimum your father needs to get an A1c test to see where his diabetes is at.
LOL i agree but he wont listen to me. Hes being stubborn.. thank you. At least its not just me that thinks he needs a new doctor
As per chellek in the Neurology Community replied to your post on your mother,
#1 - Find another doctor
#2 - Find another doctor
#3 - well you know, find another doctor