Instant Reverse Phone Lookup

I get this call every night, but there is a phone number and the name part just says "AKFD". It’s like a jumble. Is there any good way to do a reverse lookup of the number and find out where this is coming from?

I have been getting calls for like 3 weeks and it is this person and they know my name but i dont know them and they are calling my cell and only like 3 people know that number and they are starting to get really mean and i want it to stop and find out who it is.
The three people that know it are my two best friends and my parents and it is neither of my friends and they havent given it to any one.