Until very recently, I've had no problems with UHE...

Until very recently, I've had no problems with UHEAA. Presently, no one can provide me information on my account - they continue to say "I don't know how that happened"...I don't even have a current statement. They refuse to have any written correspondence though initially promised an email confirming action only to be later told that it would violate company policy. I've been through the ringer for 3 months just to get my accounts shown as paid in full. Instead they keep shifting payments between accounts so I end up with odd overpayments. And, because there in an overpayment, the account can't be reflected as paid in full while my outstanding account (where the payment should have been applied) accrues interest. I've made 3 requests now to have this corrected and each time it takes 14 days. Absolute nightmare when all I wanted was to pay back the money I borrowed... Something I thought they'd want! Now that things have gone all screwy I feel they owe any borrower an explanation, yet none can be provided. Word of Caution: TAKE SCREENSHOTS AND PRINT ALL YOUR CONFIRMATIONS! I am fortunate I did because they are now saying their system "doesn't match" my record.
Also, It seems everything has to be done in an Accounting Division that no one can call and won't provide any correspondence on the actions. The lack of visibility and accountability for an agency that can influence credit scores is just shocking.