<prompt> Human: This is in Oregon. In July of 2016, I found myself needing 480 worth of dental work. I didnt have that cash lying around, so I applied for a Care Credit card as the dental office does not allow payments.A few days after the procedures, the dental office called me and said that they had overcharged me 300 due to not understanding what my insurance would or would not cover and for what amounts. I was told they could could just apply that amount to my Care Credit balance, and I said sure. I paid off the remaining balance before interest could accrue and I thought that was the end of it. I have not used that card since then.Exactly a year later, I received a bill from the dental office for what I thought was a cleaning. I opened it up and found that I owed them 180. When I called and asked why, I was told that they had made a clerical error when they refunded me the 300, and that I was now responsible for the difference.This of course happened right as I was moving and my student loans came due. I explained that I am strapped and asked if they could take payments between 15-20. They asked if I could pay more because they dont want to drag this out, I told them I would try to pay more if I could. I was also told that since it was their error, I would not be charged for financing and if I made my payments, they would not send the bill to collections.I have been making payments monthly as we agreed upon. I recently got a paper bill regardless with a handwritten note that said, Please pay 25 monthly as agreed upon. On December 4th I received another statement from the office. It was the amount plus a 2.28 finance charge.I will be calling them on Monday to inquire, but this has all been very frustrating. I am fine with paying what I owe, I do owe it after all. Do I have any leverage here? Should I just continue to make payments as I have been? Should I try to pay more and get this over with?  <response>: This will depend who has the better documentation. If you have a bill with original amounts and some sort of note about being paid in full you can tell them to pound sand. 