Who called from 3219738947

the number just calked me on my cell phone!!

I received a call from this number and they hung up.  I called back and they said it wasn't a working number.

cell phone rang with this number on caller ID.
hung up after 3 rings.

number came up on my caller ID.  I didn't answer.

I am an RCI member, and to my knowledge they do NOT make robocalls.  They are a legitimate time share company.  They call only numbers that have been submitted by members to get their friends a "free" week end  (complete with a sales pitch once you get there, of course, but this is legitmate business practice in the travel industry).

And, as I am a member, why would they be robocalling me?