My father use to keep an air horn near the phone just for telemarketers!
Having had the task of doing that job myself, I speak in a foreign language! I was in England one time and a guy came up to me and asked something
I didn't understand(apparently, Americans don't know English!). So, I responded in German!
Instead of being just another stupid Yank, he called me a bloody tourist and walked away! But, I've also thanked a Wal-Mart employee at the automotive center in Arabic! He just ignored me, good thing because it was an accident. I had just returned from Iraq and it was still in my head! Foreign languages DO come in handy!