What is needed to file a motion to dismiss?

Question Details:

I am being sued in civil court for an old credit card debt. I filed my "answer" and received my Request for Interrogatories and Disclosure from the attorney. On the due date that they requested, I contacted their office and said that I would not be able to get the documents to them that day. I was told no problem as long as they were returned sometime that week. I hand delivered them to the office a few days later and got a receipt from the receptionist. The following day, they filed a Motion for Summary Judgment claiming that I never responded. Is this enough for me to file a motion to dismiss?

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