I am a law school graduate. What I offer is mere information, not to be construed as forming an attorney client relationship.
As to your first question of repossession, I am going to give you a couple of avenues to research:
Try
www.bbb.com
(this is the better business bureau)
Try going to the freeadvice.com homepage and click on state statutes and try texas and go from there.
As to creditors harassing you, I am going to give you an answer from a former bulletin board poster who left a great message:
1) Read the FDCPA (Fair Debt Collections Practices Act) at the following website:
http://www.ftc.gov/os/statutes/fdcpa/fdcpact.htm
You will clearly see what these scumbag debt collectors can, and more importantly CAN'T do to you. When and if they contact you again, make damn well sure that they know that YOU KNOW the FDCPA!!! Do NOT fall for their unscrupulous tactics. They will tell you ANYTHING to try to get money or a check from you!! Don't believe them. Finally, if you do owe the original debt, send your payment directly to the ORIGINAL debtor. If you are paying in full, get a written release from the debtor BEFORE making payment. It can be a very simple form... "Upon receipt of payment of $_______ the debt owed by (you) to (them) will be paid in full and all claims are released." Then make a copy of the check or money order before sending it to the ORIGINAL creditor.