my bf has been receiving numerous calls from a 961 area code. I've done a bit of searching and it all points to a scam ~ DO NOT ANSWER THE PHONE! It seems it there is a $99 charge for answering. Check out the comments here http://whocalled.us/lookup/4259618989 and watch your phone bill for charges if you've answered.

Calls at odd hours in the night. Then again in the morning. No one at the end of the line.