Under the Fair Debt Collection Practices Act an attorney has special duties when acting as a debt collector.  You can look those up on line.  Now, it is a little unclear where in this process you are and if there had been a judgement rendered.  Interest can be added to a collection case from the date of the judgement as well as legal fees.  If the case is before a Judge go and speak your mind and have your chance to be heard.  Ask the court to explain things to you before you sign.  Good luck.