Called in am, left no message

Received call this am.  Did not answer. Probably a telemarketer.

No message, blocked them.

Called my mobile number,,,,,,,,, ignored, no message left, called back from my desk....... vru stated, "you've reached the Pinger number - yada yada - to get your own no monthly charge unlimited text and calling #, etc... etc..." BLOCKED

Nobody there. Blocked.