I have had similar issues with the VA regarding spinal/head injuries. After many months of frustration going through the VA's red tape, my wife and I decided to see doctors without the VA authorization. I recieved the care that was needed to get me where I could continue fighting the C&P claim with VA. They, as expected, denied everything despite all of the tests and confirmations by VA and non-VA doctors. It took almost 3 years, but was finally covered and I was able to submit all of the costs associated with my treatment to the VA.
My advise: go to the best person out there that can help you. You may incur some charges untill VA gets off of their butt but money does you no good without health. Keep a log of all expendatures for this untill your claim gets approved so that you can request reimbursement. Remember, VA will fight you for every penny so be prepared. I can give you the name of good contacts at the Denver VA who actually care & will do what they can to help or point you to the right person. Just pm me. Also get the DAV involved. They have a lot of pull with the VA and can advise you on legal matters regarding your claims. On top of that, do not be afraid to call the patient advocate and let him know that you are not receiving the care you deserve. If the patience advocate does not solve the problem, call the Instector General. VA executives do not like calls from the top saying that are not doing their job and formal inquiries will be made into their facility. In short, be an ass right back at them, it's you life, your helthcare, you deserve to be treated.