These people are third-party telemarketers who are bizarrely pushing "academic advising" because you "recently visited a website with job listings" (most of what they're marketing is driving for Uber, and I've not been on a "job site" for years).

They've called from variations of this number and similar numbers (925-390-00xx). If you tell them you're on the Do Not Call list, they'll hang up immediately, but they have not stopped calling from other, dummy numbers. I've reported every call they've made to me to the FTC and encourage others to do the same.