Court Collections Unit. Phone Hours, am - pm.If you owe money to a California court and don't pay, it becomes courtordered debt. Courts may send us your debt for collection. A cease and desist letter is a formal written request that you send a debt collector telling them to stop contacting you about a debt. You have 30 days to respond to a debt lawsuit in California. Our firm assists creditors in all types of debt collections, including those involving a bankruptcy case or a contract dispute. Use this letter to help you dispute liability for 'simple contract' debts. This catalog serves as a contract between you, the student, and Contra Costa College. That contract is valid as long as you are continuously enrolled.