Methadone withdrawls

Patient: About 6 or 7 yrs now, I was put on Methadone for foot pain,signing a pain contract ect. Never any problems. Then I switched Dr to be closer to home again signing a contract, but knowing I had other medical problems that needed delt with,a couple years i switched again. Things were going fine and out of the blue I get a letter that they can no longer have me as a patient because they found no methadone in my system during a u.a. This I did not understand at all. So I had to try to find a doctor and did. signed another contract,did something stupid and relapsed with a street drug.I know very stupid, so now my new Doc just cut me off my methadone.In my whole life never have I known addiction like this with methadone. I need help .meth clinics are backed for 6 months. I s there anything I can do. Anything besides methadone that can help me not go crazy.please help