They've called my house and cell phone- they leave no message. Who are they?

I believe it's Sallie Mae.

I dialed the number back and they reported it was regarding a Sallie Mae student loan.  I ended the call without giving any information and will call Sallie Mae directly on their official number.

I dialed the number back and they reported it was regarding a Sallie Mae student loan.  I ended the call without giving any information and will call Sallie Mae directly on their official number.They call 7/24 every day of the week 6-9 call per day and i am making monthly payments as $200-$300.

I get calls from these people constantly, and my loan has been direct debited from my account the entire time.  They asked to "verify" personal information, which I will not do.