Who I have the same questioned this topic

I am attempting to contact someone, and when I text them, I get a message saying that it's a landline. I was able to text them yesterday with no trouble. When I call, I receive the following automated message: "You have reached a non-working number. Announcement: 14 switch 4192-1" Have I been blocked? Has their service been cut off temporarily? Did they change their number? Please help. I do not know their service provider.