I don't know all of your particulars; but if your weight cost you to lose your job and you are at least 50 yrs old, you could apply for Social Security Disability. If approved there would be a two year wait and then you would get Medicare coverage.
This is the path I had to take after trying for six years to have WLS. Once I got my Medicare things moved pretty quick to the point where I had a Panniculectomy, Pacemaker surgery and a DS all in the span of 14 months and Medicare paid for everything. The reason I bring up SSD is that like myself most people only think of Social Security being available when you reach retirement age. When in fact SSD is available once a person turns 50. You still have to be approved but its a better chance than having to deal with these insurance companies. Hope this is of some help; good luck and don't ever give up. The only sure way to lose the fight is to give up.