I never answer these calls identified as SVC. They previously called: 9/18/14 from 425 406 9529; 9/15/14 from 541 257 1433; 9/10/14 from 458 201 1262. Fortunately, my national cell blocker service (free) has nailed them all after one ring.
caller id was SVC they did not leave a message. When will these annoying calls stop? I have caller id and don't pick up if I don't recognize the caller. I'm sick of the phone ringing most of the time it's one of these robo calls. It seems worse since the Do Not Call List started.