I didn't answer it because I didn't recognize the number.  I am on the 'do not call' list and continue to get my days interrupted with annoying calls like this.  I tried to call the number back and was told to dial '1' first so I didn't bother.

When you call back it says this number is not in service!

I get so tired of calls coming to my residence, and no message left.  Call back it is not in service.  Oh and they called me at 8:15 Am on a Saturday.  Annoyed!!!

Phone rang early afternoon. I said hello. A male voice asked for me by my last name which he mispronounced which is always a dead giveaway. He claimed to be from Canadian Real Estate Company (Centre?) and I would I like to sell my home. I said I would like to speak to your supervisor. He must have been inexperienced because he passed me right over. I said repeatedly Do Not Call This Number Again and he tried to keep me on the line. Since I never hang up first I put the receiver where he could listen to the radio. Finally - he hung up. The number is in Saskatchewan ..... really?

Some real estate agents trying to convince me to sell my house.

They called and somebody with an East Indian Accent addressed me by name on the answering machine.