Goldman & Warshaw- Default judgement

I am being sued by Goldman and Warshaw. I talked with an agent at that firm at the time I received a Special Civil Part Summons to try to reach an agreement. The person I talked with said that I needed to complete a monthly budget assessment in order for me to reduce my monthly payments. I completed the form and returned it to Goldman and Warshaw 3 days later. I further called to confirm receipt of the document at their office and to enquire about what was happening. I was told at the time to call back in a couple of days as it had not been processed. I called back on 4 different occasions, each time leaving a message for the said agent to return my call about the monthly budget analysis. No one has called and it has been 3 weeks. Today I received another notice from Goldman, this time a Certification of Entry of Default. It is vague but threatening. In it, it states as one of the points that "No request has been made to enlarge the time in which to file a responsive pleading". I am not familiar with financial law but I was under the assumption that was what I had been doing. I am going to call the firm tomorrow. I now, however do not trust them as far as fairly negotiating with me. Has anyone else had this experience? Do I have any recourse in this matter? Please help if you have any experience or advice to share.