Who called from 9788321543

Scammer: Called my cell. Claims to be "customer service" and claims I have been selected for some sort of cruise.

Called my cell phone. No one there when I answered. I'm on the Do Not Call registry.

Same here.  I think she is a robot.

I Did not answer, and they left no voice mail.
My Rule is if I don't know the number, I don't answer.   If they are legitimate, they will leave a voice mail.

Several unsolicited calls; no message ever left. Caller ID identifies as Vitelity LLC.