The caller said RCI one time then another call regarding the Hilton Hotel vacations. They will not take you off the call list. So annoying. As other poster have mentioned, when you call back it is a nonworking number.
No one can block a call for you. You are the only one who can stop them - Do not answer unknown calls and do not call them back. Consider getting a call blocking device (or app for your cell phone)-they're available online and start around $50 or so. http://800notes.com/nb/search?q=call+blockers
Also take a look at: http://www.wikihow.com/Block-a-Call
Called to offer 1 wk Hilton Vacation pkg. for $ 399.00 etc. all inclusive. # showed several times in my caller ID. when I called back " Not a working number" a scammer