Please block the following numbers if appropriate, and report to NOMOROBO.
"SAN FRANCISCO CA 415-792-6879" Robocall about a (nonexistent) student loan, on Oct 16 2018.
"SAN FRANCISCO CA 415-830-3931" on Oct 15 2018 (no message)
"Lau J 415-668-6688" Robocall in Chinese, on Oct 11 2018.
I understand these may be spoofed IDs, and hope efforts are underway to reduce spoofing. Even partial validation of caller IDs would be helpful.
Thanks for your efforts.