Till I cut off my landline this year, I still got one or two calls a year about bills from my uncle who died 19 years ago.
I started out polite but all I would say in the following years was F off and hang up the phone.
We just do not answer any non-local calls if we do not recognize the number, or at a minimum, the area code.
For a while, we were getting solicitation calls from charities at a rate of one every 15 minutes, now down to about 2 a day (we recognize the numbers).
You think that's bad?
I kept getting calls from first cousins I never knew existed demanding child support. ;-)