harrasing calls

Called just now . . .scammers? or are they "now" legit?

They've called several evenings over the past week and have never left a message.
Its kind of annoying -- aside from the fact that they're calling from Jersey.

***SCAM***
Surfing for personal information. Placed on the "do not answer list" on my phone.
REAL providers leave voicemail!  Don't be fooled.

Cold called claiming to be Express Scripts. For "privacy" asked for my personal information, after telling me I worked for someone I don't work for. I told him he was calling me. He needs to prove to me, not the other way around. He hung up. That is not how a legit caller acts.