I get far fewer scam calls on the cell phone than I do on my ex-landline (now VoIP), at least. For the VoIP, I had to set up a CAPTCHA on Asterisk.
You should double check with customer care (611). As I mention in a sibling comment, I'm on a very old plan (20+ years). It's SimpleChoice, 10GB per line unlimited calling and texting (4 lines + 2 free as part of a one time promo).