I got same message for somebody I know. Do worry if you are in Texas, They need business license register at the Attorney General office to do business in Texas. This person is calling from Pakistan. Ask them to mail a copy of the complaint to you and ask them for there Texas business address,so you can report them to Attorney General office and see if there register with the State of Texas. they will hang up on you and have some explicts for you.

Called looking for my brother as "unknown" on my called ID. They left this number as the contact number for the plaintiff. . Say they are going to file with the court and he has been officially served by this phone call? I am sure it is a bill collector.