Called left no message

Received 2 calls on 2-10-17.  They left no message.

Multiple calls to my daughter's cell while she's at school!!!

Automated woman voice says that our warranty was about to expire and would we like to hear how to update our coverage?  I did not respond and the voice said "great, let's get started.  I said this is a business number - do not call, but of course I was speaking to a recording.    Possibly they were looking to elicit the word "yes" when they asked the first question.  I hung up.

automated call started out saying they were calling from 'home security' - scam/fake/nuisance