I called the number back, and it's people wanting to give you college information

I got a call from this number. I did not answer it and they did not leave a message. They called again 30 minutes later with the same result. It is irritating

This number calls me every other day says nothing if I answer if I do not leaves a silent voicemail

This number calls at least 3 times a day, leaves no voicemail nor says anything when you answer. Very annoying