When you show up in court over the debt that you claim to have paid, bring with you all letters, canceled checks, credit card invoices and receipts showing that you have in fact paid the debt to show to the judge.If the court agrees that the debt has been paid in full by you, ask the court to order the person or company that brought you to court to sign and file a full satifaction of its judgment claimed and to give you a copy of the document to prevent future problems.Before the court hearing, send the doctor's office copies of all documents showing that the debt has been paid with the hope that the court date will be canceled. If the doctor's office agrees to cancel the upcoming court date, get somehting in writing from it as a safeguard for you.