called me twice and when i called back it went straight to a voicemail or something.

My mom who lives in colombia received a bill for 2 call from this number. I never called her using my mobile because we use yahoo messenger pc to phone to talk.
Those calls were mada on Feb. 21 at 17:09 and Mar. 11 at 21:28

This is a mobile phone roaming number. If someone is calling from this number, it most like means that the person is calling while roaming. It saves the caller from roaming charges.