Penn Highlands Clearfield Hospital

I have been getting PSA blood test at Penn Highlands Clearfield Hospital every three months, with identical requisitions printed simultaneously by drJ*** of UPMC Pittsburgh
Initially, I paid dollarsFor the test on 03/08/I was billed dollarsI inquired of the lady I was on the phone with what was the reason for this large increase, and she promised to inquire and get back to meI never heard from them again, and reluctantly paid the bill
Then, for my test on 06/27/I was billed dollarsAgain I complained, and was promised feedback Again I did not hear anythingWhen I received a reminder for the payment, I complained in a written letter mailed to them, stating that I would not pay this bill until I received a satisfactory explanationI have not received any other reply than a warning that the invoice will be sent to collection unless paid immediately