AES/PHEAA Student Loan Complaint

AES/PHEAA Student loan department,

Non-federal student loan Dealing with my lender or servicer Don't agree with fees charged California

I have a private student loan with AES. The original lender was - - -. The original loan amount was for $16000.00. My balance with a few deferments here and there is now $24000.00! I make my payments every month and they keep increasing my balance. They harass me and tell me that I am late on a payment when I am not. They are reporting a double balance on my dad 's credit as the cosigner. The way they are amortizing the interest has to be criminal. I was attending - - - - college at the time I took out the loan.