I never got that bad coming off alcohol compared to what you described! But than again I also wasn’t addicted to alcohol and benzos! Mine was mostly the obsession for alcohol and going crazy whenever I got sober! And the only relief was to drink! I also substituted cough syrup, cocaine, otc drugs when I attempted sobriety! It’s a miracle I pulled out of it though!
From what you described it’s a shame you can’t get medical treatment for that! You need long term treatment! I would keep on seeking different hospitals or doctors who can help you with this! You really need to be inpatient for your condition!