You can file a motion to quash the subpoena, but you must have justified grounds to do so. If you owe money to the creditor for a judgment, your financial information is relevant and the court is likely going to force you to turn that information over to the creditor.
You can object and buy some time, but if you don't pay (saying you plan to pay is not good enough), you're going to have to turn the documents over.
It is possible - but highly unlikely - that the court would make a decision on your objection before 3/15.
Once you file your objection, the creditor has 10 days to file a response; then you have 5 days to file a reply. Once all of this is done, you have to get a court date for the hearing. Setting a motion in most courts takes at least 30 days - usually longer.
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