I got a number calling me today too three times and the number was only 2014. They call and don't leave a message. I can't find anything online either on who is calling me.
Had a call from 2014 and 2000 today but answered neither. Looking at the 2000 thread, that was a scam regarding someone saying that your Mastercard/debit card has been locked and asking for your details to reset it.
I got that Same call too, It said This is the police is everything ok with you, Your parents are searching you, tell us where you are. and stuff like this. But my Parents where right next to me when I got this call. That was very weird.