My dad's diabetes is 23 (canadian) and he feels dizzy, weak, hungry/thirsty and is flushed. He won't go to the hospital I'm lost and don't know what to do :(

He's a type 2 diabetic for a while now, his diabetes has been slowly increasing and the docs just keep upping his medication and it's not helping. He's unwell the past few days and today it's worse and he won't go get checked out I am so frustrated. Is this as bad as I think it is?