I received a summons from a law office regarding a debt collection and responded with a demand that they file with the courts. It stated in section 4 of the original summons that I could make such a demand and that if they did not file with the court within 14 days, the summons would be void. I just received a second, identical, summons and there is still no case number. They have not apparently filed with the courts. Can they continue to send me summons for the same exact issue, and if so, how should I answer?