Sallie Mae Student Loan Complaint

Sallie Mae Student loan department,

Non-federal student loan Dealing with my lender or servicer Keep getting calls about my loan Kentucky

I cosigned for a private student loan for - my kids with Sallie Mae. Since she graduated, Sallie Mae calls my cell phone and work phone several times a day about paying this loan off. I have asked them to not contact me by phone and only in writing, but the calls continue. I have received no documentation through the mail, only this constant barrage of calls. They are attempting to harass me into paying them even though I just cosigned the loan.