I picked up, silence, said hello again, and what sounded like a recording asked "Is Michael there?", I said wrong number, and the recorded voice said "sorry about that, we'll update our records" and hung up.  Really weird.

Asked for Paul then quickly hung up

Oh yes....asked for Paul then.. "sorry about that, we'll update our records" and hung up

Caller didn't leave a message on my machine and the caller id said "EASTER SEALS" which probably means telemarketer/scammer since every legitimate caller I know leaves a message. So I ran 3 reverse traces using 3 different types of traces and all were blocked for a person or business name and the only information was a general location of Chicago, Illinois using a service provider of NEUTRAL TANDEM-ILLINOIS, LLC. This is definitely a scammer that is either spoofing numbers and/or using a Voip system while phishing for personal information and running some scam ( i.e. EASTER SEALS CHARITY etc. ). A legitimate business would never hide their identity and location from the public by blocking a trace. DON'T ANSWER AND DO NOT CALL BACK FOR ANY REASON. Block and report to the proper authorities. Phone companies should be held responsible for these types of calls since they are making money from them by providing the systems and services that these scammers use and possibly farming out numbers too.
NOTE: HERE IS THE REAL EASTER SEAL OFFICE IN CHICAGO
                          Easter Seal Administrative Office-Chicago, IL
                          1939 W 13th St #300, Chicago, IL 60608
                          (312) 491-4110
THIS IS THE SCAMMERS SERVICE PROVIDERS CONTACT INFO
Neutral Tandem Inc or LLC
1 S. Wacker Dr
Ste #200
Chicago, IL 60606
Phone: 312-384-8000
Secondary Phone: 312-363-6600

Even if they really are Easter Seals they drive us mad with calls and junk mail - no longer donate to them