I've also got many calls from this number and they never leave a message. Today i answered it and the claimed to be "The Grand" and calling about me performing karaoke. Then they asked if i was interested in karaoke and I said no so they said they'd take me off "their list." We'll have to wait and see about that
I signed up for a birthday party 6 years ago at the Grand Cafe in Portland, and every year they call me back trying to schedule another. They must make a commission, since they're pretty aggressive.