Their number is +1 (323) 404-6962
having used bitly’s preview feature, it seems the link is for By Invitation Only Comedy, which seems legit, yet shady. apparently, they’ve sent spam to gain audience only to turn away people who got tickets for being “over-capacity”, according to a post on Ripoff Report from a year ago. the site the link takes you to is harmless, and it appears that the event actually happened, going by a post Matt Taylor (the first comedian mentioned on the site) made on Facebook.
I’d say it should be safe to reply to the message with ‘STOP’ to get your number removed from their list