A new trick the scammers are using is to send holiday text messages on the holiday (e.g., Thanksgiving, July 4 & presumably Christmas). They look like they're friendly greetings from someone you might know or even not know like it's just a wrong number dialed.
If you respond with something like "Thanks, but you got the wrong number" you just told the scammers that your phone number is a good, live one - get ready for mega numbers of scammer calls thereafter.
Word of advice about these text messages: IGNORE THEM!
Just got a call at 5:53 IN THE MORNING! I get calls from telemarketers for that electric company constantly. I now have 41 numbers blocked...most of them are cell phone numbers. My 90 year old mother stayed with me for a while and kept answering the phone, so I guess my number got locked in. No one has my home phone except my mother and brother, so I know they're telemarketers.