Plaintiff Attorney systematic process to unethically cure defective complaint once answer is filed-

I could be wrong, but it seems too coincidental. I had two complaints filed against me, both creditors using the same law firm. The firm in each case filed defective complaints, which I think they do as a matter of practice assuming that the bulk of Defendants are going to be hit with a defauly judgement. However, in both of these instances, once I filed a Motion to Dismiss concurrent with my answer, within about a week a large envelope arrived in my mailbox. In it, a letter from the lawfirm (completely different office than entered in the case in a completely different state) saying they had received my request for verification of the debt....odd since I never sent one, right? LOL and a copy of all of the billing statements for the account. This was sent regular mail, not filed in the case. The firm is trying to create a record outside of the case in order to save thier defective initial complaint it seems using unauthorized communication to do it. Happen to anyone else?