You're in a tough position, but for those amounts, it is worth it to hire a consumer attorney in your area experienced in debt defense. If you believe the reporting of those accounts on your credit report to be inaccurate, dispute them to the credit bureaus in writing.
Please note that no attorney-client relationship is created by my answers to questions on the Avvo forum. My responses should not be construed as legal advice, regardless of whether I am admitted to practice in your state or not. I am an attorney in Miami Beach, FL, practicing foreclosure, bankruptcy, credit repair, debt defense, and aviation law. Please consult a lawyer in your state if you seek legal advice.
Gather copies of your police reports. Gather all information you can regarding charges, payments, accounts paid from (presumably not your own) and proof that transactions are not you.
Make an appointment with counsel.