Summons to appear

I just received a summons to appear in court, and the gentleman who served me informed me that I have 30 days to respond (if I want). As I was reviewing the documents, they are indicating that I have not made any attempt to make payments. However, when it finally got to the collection agency, I made about $1700 worth of payments ($1000 & then $100/month). When they asked to increase my payments to $180/month, and I told them "no" because I wasn't financially able to, they asked me to write a letter to them, which I did via fax and mail indicating that I wasn't able to make the increased payment of $180/month but was willing to make the original monthly payments of $100/month, and then do a review. Please help me as I want to know my options.