Oh Duet, this is exactly what I have been fighting for 2 years.
Only the original owner of the card can have you removed from the account! If the account is past due, they will not remove your name.
Here's the best way to take care of it:
Run all three credit reports. (Free yearly reports at
www.annualcreditreport.com)
Dispute anything that lists you as an authorized user. You can dispute right online!
The credit card has 30 days to return an answer to the credit reporting agency (equifax, experian, transunion) This is all done electronically.
It is worth a shot at this. If it doesn't work, and they refuse to remove it from your report, then there's other things you can do. The laws regarding AU's has changed too.
Feel free to contact me.
visit creditboards dot com
They are quite comprehensive with a lot of very smart, experienced folks there!