I do the same. A few of them got very angry, yelling quite creative obscenities. Some were amusing and I had never heard of. I took it as a an enriching cultural exchange. But did realize they have my number and could do something like what you suggested.
Re:Ringless voice mails from telemarketers
by sillysaurus3 on Saturday June 03, 2017 @08:01PM
(#14479174)
It's a fun hobby to learn to swear in all kinds of languages. Russians are very creative in this respect.
Except they might retaliate one day and set their outgoing ANI to my number...