Proof of Service
My wife and I were never served but someone filed a Proof of Service in order to get a default Judgment.
Now What?
Default Judgment Based On Sewer Service
If you have a defense to the lawsuit, you have one chance to file a motion to set aside the judgment. The law requires that you act immediately as soon as you get notice of the lawsuit. Use an attorney, because you won't get another chance.
If someone falsely signed a proof of service, that person is civilly liable to you. If the plaintiff is a collection agency, "sewer service" is an unfair debt collection practice for which they are civilly liable to you.