As a rule, I never answer calls from unfamiliar numbers, especially if they don't provide a CID name.  This number called my landline today while I was out.  CID only said "Metuchen NJ".  As usual, the caller did not leave a VM message when given the opportunity.  Another website had a comment from a reviewer that said it was an automated call stating "congratulations on your student loan being approved..."  Right!  I'm 65 and have no need for a student loan.  This is an obvious scam to get personal information.  The number is now blocked forever!

2 calls with Customer Service showing on the ID left no message

Called 17 March 2016 about 10:00a PST. Offering to pay off school loans.  I don't have any. Blocked on Ooma.

Call came in at 530P CST, Caller ID showed "CUST SERVICE", and they left no voicemail. Since neither my spouse nor I ever had any student loans this is most like another SCAM. We have had repeat calls from various numbers with the same Caller ID or one which shows "CUST SVC". We never answer suspicious calls and if they leave no voicemail they get blocked.

me too never even went to college, I am 67 yrs old.