The next time they say you are dead, go down to your local police station and ask to have yourself fingerprinted. Then have them write you a letter saying you are who you say you are and that on this date you are alive and well.
All PD's have people who are notary's. Get it notarized and then make half a dozen copies for the companies who think you are dead.
I'm trying to think of the common title for the person in a PD who assists the community with things like this but I can't.
My latest adventure is that my health insurance was cancelled yesterday because I'm dead. So far my Disability has been stopped, my retirement was stopped, my home owner's insurance cancelled, my mortgage application was denied, and now my health insurance is cancelled. I've concluded that the easiest way out of this whole mess is to actually die. I'M IN HELL!!!!