Since when did Hilton go into the telemarketing business?? Sounds odd and funny.

they have called me 4 times in the past two days. no message and no one ever answers.

Called my cell at 8:40 p.m. on a Tuesday evening.  Did not leave any message,

he caller said they were from Hilton Grand Vacations and they wanted to make an offer for a visit to one of their resorts. They We're pushing hard to get me to make a payment for a highly discounted stay and continued on after I declined, offering to upgrade me to an "Owners Suite" and even more off the already discounted rate. I said I had absolutely no money and they asked if I had a significant other whose card I could use. What?!
The pressure to pay right then and the too good to be true deal was a big warning sign. Also, they had my address as one from 10 years ago and a card on file that expired a long time ago.
I wouldn't trust them.

Keeps calling no messages left. Answered one time and silence.  Block this number!!!