I'm tired of this number always calling me

This number and a few others assoc with the same company keep calling. It's a phishing scheme I think.
Every time I ask to be removed from their list they hang up. I receive several calls a week. It's basically phone harassment.

Get telemarketer calls from this number. I'm on do not call list.I ask them to remove my number from their list, they hang up.

same with me

Calls and ask what career fields I am interested in. His name was James - both calls I received.

First call - I say I'm at work, can I call you back? Hangs up immediately with no warning

Second call - He says he is responding to an inquiry I made to further my education.  I say I haven't inquired about school.  He continues asking what fields I'm interested in. I say I'm not interested in school or career change.  "I'm not trying to enroll you in anything today. What fields are you interested in?"  I say none, I'm not planning of going back to school. "Some of the degree programs are business administration....blah blah blah, are you interested in any of those?" I realized this was definitely some kind of phishing scam since none of my responses deter this guy "James".  I just hung up.  When I call back he says "Degree Programs, this is James"  I called back a few minutes later and the recording claims it is "Career Advising Center" (very generic and no company name stated) and if you press 1 - you can enter your phone into Do Not Call Registry (I don't trust it so I didn't do it) and press 2 to CLAIM A $25 VISA CARD -- there you go- confirms it is a scam, in my opinion.  I'm blocking the number now.