Keep getting calls on my new cell phone from this number. I have only given the number to one trusted person, so I know it's not a legit call and I don't answer it.

they keep sending me text and calling. I have ask them to stop but they keep doing it

I got a missed call from these jerks. so I called back, only to get the number is disconnected. so apparently they are not calling from the number showing on the caller ID  they are up to something illegal for sure

The individuals of this telemarketing scam are looking
for people who have problems paying student loans.

These calls appear to be in violation of:

1. The prohibition of using pre-recorded messages.

2. The do-not-call list, as these telemarketers
  appear be ignoring that list.

In the case of such calls it generally better not to answer
and ignore them. Often these unscrupulous individuals
identify and resell the numbers which have answered,
and their victims are contacted in a couple of weeks
for another campaign.

NEVER answer a call when you don't recognize the number. Once you answer you have officially done business. There is a DNC number you can TRY. 1-888-382-1222. It only takes a few seconds and it will help.