Discover Student Loan Complaint

Discover Student loan department,

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

I was a co-signer on an original student loan, my son refinanced it through Discover student loans. They call me at all hours, leave messages. They leave their number but never a name of the company. Just that it is an important business transaction WHen I speak to them the payment is not overdue, they are calling 5 days before it is past due. I direct them to check their on line system, and when they do every time the rep. says that the payment was made within the last - or 36 hours. Then they hang up. I have told them time and time again, I am only the co-signer possibly, and not to call me until the debt is overdue, and they refuse to accept this. I get these calls regularly.