Whatever you do, don't click that link. It's a sure fire way to download a virus, or get caught up in some sort of scam.  Forward the call or text to *7726 (SPAM).  This works for AT&T, T-Mobile, Verizon, Sprint or Bell.  Don't know about other providers. Read advice from the FTC
https://www.consumer.ftc.gov/articles/0350-text-message-spam

A lot of people are reporting extortion scams that begin with an invitation to view pics.  Don't do it.