This is at least the fifth call I've had about these, but the first from this number.
Claims to be the company that manufactures walk-in bathtubs.  Says will be in my area tomorrow and wants me to choose between 2 times for them to "give me an estimate".  (Shades of Dr. Spock!)
Reminded her about DNC, and she said it doesn't apply because this is only an 'estimate' -they aren't selling anything.  There are more holes in the DNC than in Swiss cheese!
Told her I would not be home any part of tomorrow, or any other day.