You have VA benefits, right? Unfortunately with this disease you have to really be your own advocate and fight for every little test or procedure that you need. Even a diagnosis is a tough thing to get. We've all been there. Some more than once if we changed insurance companies. Have you thought about disability insurance, or are you still able to work?
You can't go on with pain like that and acute pancreatitis can be deadly. Don't wait. Keep pushing until you get some help. It really is awful that when you are sick you have to work at getting someone to help you get well. Since you also have kidney problems the two could be connected. You really need to get to a specialist. Can you insist on that at the VA?