Extreme difficulty signing up for United supplemental insurance.

I moved from Maine to Wisconsin and because my Maine insurance company is not active in Wisconsin I decided to try United as they were said to be active in Wisconsin. What a mistake. It has been three months of starts and stops and still no health supplemental. I was informed a month a go that one of my three applications had been accepted and I only needed to get United a letter of disenrollment from my previous provider in Maine. I did that and did not hear back so assumed all was fine. I got a United RX card and when I called was told the United supplemental healthcare card would be coming soon. Wrong, no card came so I called again and was told that I do not have insurance with them, that the letter of disenrollment was missing something. So I rushed to get an updated letter, but guess what? I am timed out! So I am going to the local agency for helping the elderly, the ADRC and hope they help me get insurance and possibly  some sort of rebuke to United for incompetence, or culling me out by dragging the signup out until it was too late.