ACS Education Services Student Loan Complaint

ACS Education Services Student loan department,

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

Student loan repayment initiated approximately 20 years ago, went into default, payments began - 2010 with beginning balance of $11000.00. Since then $ $4400.00 has gone toward interest, $2600.00 towards principal with an outstanding balance of $9400.00 on an 8.25 % fixed loan with monthly payments in the amount of $120.00. Loan is through ACS Borrower. We have reached out to ACS with no success in understanding their calculations. School was - - -, - - T-