In the case of Neurology, specifically MS, this is true. You seem to be focused on your symptoms being due to Neurological Disease but it may not as the Neurologist's you have seen have stated.

You have (multiple?) herniated discs at the cervical spine (neck). This can cause Neurological symptoms but is not within the specialty of Neurology. You would need to see a Orthopedic Spine Specialist, not a Neurologist.