Has anyone else been diagnosed with neuropathy and gone through evoked potential, MRI, and EMG testing?

About 2 months ago I decided to see my primary care physician for numbness and tingling and pain in hands, feet, arms and legs. She had no answers, but sent me to a neurologist. The neurologist set up 3 rounds of testing, MRI, Evoked Potential and EMG, as well as a 2 month follow up appointment, and several rounds of blood testing. MRI showed an enlarged Pineal Cyst, Evoked Potential showed slow response of nerve set in hands and feet. The EMG showed carpal tunnel of the wrists. Due to the enlarged Pineal Cyst I was sent then to a Neurosurgeon who also used x-rays as a secondary method of testing. Today at my "follow up" I expressed that I am still in immense pain daily, have numbness and tingling in all limbs and have had terrible head aches and facial twitching, of which he prescribed Magnesium 250mg for "pain." His recommendation going forward is to continue taking Vitamin B12, and add Magnesium, do physical therapy and now go and see a rheumatologist as well as an opthamologist. Then back again in 6 weeks for a second "follow-up" appointment. All in all I feel these doctors are simply sharing the wealth by referring their peers to help determine a cause, which no one can seem to do...I am already at about $10,000 in "treatment" and have had 0 treatment. Thankfully my insurance is 80/20 or I may have had to declare bankruptcy, and still would have no results, and no treatment. Has anyone esle had any similar situations, and has anyone been given a realistic treatment plan and definitive diagnosis?