My SSI, Medicaid and SNAP benefits were just cut off suddenly and wirhout reason. I want to appeal and I need representation or an advocate. What do I

SSA should have mailed you an SSI cutoff letter. They could have cut you off because your other countable income increased, they reviewed your claim and found you no longer disabled, etc. You have the right to appeal within 10 days of receiving the letter to keep your benefits going through the appeal process. If you missed the 10-day deadline, your benefits will stop but you should still appeal within 60 days of receiving the letter to dispute the cutoff and try to get your benefits reinstated. I do not handle cutoff cases.