I think I dodged a bullet today.
Came from lunch and there was a text from (806)474-4955 asking if I recognized a transaction from WalMart in Los Angeles.
I replied "no" (typed in, not via a link) and immediately my phone rang from that number. My spidey-senses finally woke up and told me that something wasn't right so I checked e-mail and nothing there, and logged into my credit card account and all was as it should be. I took a screen shot of the messaged and forwarded to the credit card issuer's spam e-mail box.
The caller didn't leave a message so that also tells me scam. I'm half-tempted to reply "no" again and see if they call right back, but I don't have the time.
Stay alert.