I don't answer landline calls unless it is a family member.
If I mistakenly answer a sales call on cell or landlines, I say my county sheriff's department.
calls have slowed down alot.
Also ATT / android cell phone, click on add to auto reject list, then click on send number, type in 7726 and send.
you will see a response from att that they are using the criminals email and or phone number to track them down. I have been doing this for a few months and these texts and calls have lessened.
constant fight.