That is exactly what the site is for, to give information about an unwanted caller. There is nothing inappropriate about the post you replied to, perhaps you meant the one after that one. That one must have slipped through unnoticed.
Didn't answer and no message left so I called the number back. Voicemail (lady with no accent) said something to the effect of "if you got a call from this number, it wasn't me so please don't call back." Odd.
Telemarketer for duct cleaning. South Asian accent. When I told him I didn't have ducts, he said f*** you, install some f***ing ducts so I can come and clean them. I was nice, he hung up, and I wished there was some way to call in an air strike.