This is supposedly from Anthem Blue Cross telling its members about new pharmacy benefits. No message left and you should proceed with skepticism on this as no Google link found connecting this to Anthem in any way. Sounds like a boiler room operation in the background.

Received call with AnthemBCBS I.D. Asked that I call 844-657-7924 for info on new pharmacy plans.
Believe this to be a scam, please proceed with caution.  Unable to locate either number in the listing of AnthemBCBS phone numbers.

Call received 7:48 pm on Monday from the 330-622-4186 number, ID on telephone was AnthemBCBS.
They said new pharmacy benefits for a certain plan and said to call 844-657-7924 for information.
Unable to find any info on the 844 number, however, the 330 number is located in Ohio.  Think it could be a scam due to recent BCBS compromised files.

If you type the number without the dash (-) like 13306224186 it comes  up in Chinese

Received the same message yesterday. Will be calling customer service to verify tomorrow .