Called my work number. There's no way to call it back because there are too many numbers

I just want to make sure this number is not part of a scam. I am not sure what to do next, they have my number.

This is not the first time I've received a call from this number. This time it was on my mobile phone - whose number has been registered with the national do-not-call registry.

Unknown caller with strange message on voicemail

Owner of this number calls my cell phone several times a day but will not leave a message. Once when I did answer the phone they asked me to identify myself but when I asked them to identify themselves and what they wanted they hung up.

They have called several times, never leave a message, and when I do answer, the line has no on the other end and hangs up after a couple of seconds.

Saw it on caller ID and when I called the number back, the call would not go through.

repeated, unanswered calls from UVA solicitors

nothing. just calling

nothing said called back busy

This number is a number used by the FBI when they try to track folks down.

Pretending they are my cc company and do I want to lower my interest rate. They call every day. They are harrassing me to death. I'm sooooo sick of this invasion of my privacy.

This Shane Adams called telling me that the FBI is coming after me for a pay day loan that has not been paid. He called several times because the call would disconnect. He sounds foreign as in Nigeria or African decent. He tried to intimidate me about this outstanding pay day loan which I have no clue what he is talking about. He wanted to speak to my supervisor. I told him not to call me at my office and to seize and desist from calling me.

This person has called my boss and left messages for me. I don't know who it is but I have left messages for them to quit calling but yet they still do! Can't I legally do something to make them quit calling my work?