Just received a call from this telephone number. No message was left. Anonymous callback reached the old thanks for calling the survey has now ended....blah blah blah.

And they just called again!

Caller stated savings from " Discount Power" after I was asked "Can you hear me" to which I responded
"Yes I can"
Then caller hung up.

I answered and heard a recording saying I won a cruise to the Bahamas.

NEVER respond to an automated message this way, unless you are CERTAIN you know the source and what they are up to.  They could be RECORDING your "Yes" and inserting it into something that 'gives them permission' to extract $ from a bank account or credit card, etc.  In this case, with the name 'Discount Power' I'm betting this is the "Switch Your Electric Provider" SCAM, and, if they have access to your electric acct # somehow, they could SLAM you to THEIR "Acct" and charge you all kinds of extra fees for doing it.  Its the latest scam.