Severe diabetic neuropathy pain

Does anyone know of any good pain relief for severe diabetic neuropathy pain? My medicine are Cymbalta, Lyrica and Tramadol. I currently in last few weeks have been suffering from tremendously painful diabetic neuropathy pain in my hands and feet and down both front of my legs. The pain isn't at all controlled or has it been any relief at any time. I've been to the ER to the hospital recently because the pain was unbelievable to me. PLEASE ANYONE WHO CAN HELP ME I'D GREATLY APPRECIATE YOUR HELP AND TIME.