Another day, another rejection

Is it possible that employers are afraid of people that appear over qualified for a position? I am so tired of being ignored and rejected for jobs that I know I can do. I have 12 years of financial services experience, some of that as a supervisor in a call center but I cannot even get a job as a bank teller or at the registration desk at the hospital.

- Do they suppose I won't be happy and I'll leave soon after being trained? You would think my 12 years with the same company would show that I'm not a job hopper.

- Do they think I would come in and try to change things? Change isn't always bad. :)

- Do they think I want too much money? They might be surprised at what I'm willing to accept.

Maybe I should clean up my resume and make it look like I did almost nothing at my last place of employment. If they think I'm just interested in entry level jobs, maybe I can at least get my foot in the door.

Perhaps I should take a different approach going forward. When I receive a rejection letter, I should respond and ask them for more specifics. Did I not interview well, am I over qualified, did they have someone internal in mind all along? What am I doing wrong that is keeping me on this train of unemployment?

I'm really starting to get frustrated and I don't like it. I have seen the people that are currently working at some of these places I've applied (and been rejected) with. It's a huge blow to my ego knowing some of these people are able to get and keep a job but I can't.