SMI Imaging

In January I received a mailed statement dated 01/12/2022 that states $300 owed to SimonMed related to an MRI conducted on 12/07.I originally had been scheduled for the procedure on 10/25. The procedure was rescheduled to 12/07. Payment had been made in the amount of $908.74, posting to my HSA account the following day on 10/26. An employee at the center stated it could take too long for a refund to process to my account before I would need the funds to pay again and that I should bring my receipt to the rescheduled appointment.I was contacted on 12/06 by *** who said SimonMed overcharged on 10/25. Mr. stated I would only be charged $300 and receive a refund for the additional amount paid. On 12/09 I received the refund of $608.74 for the difference of the $908.74 paid on 10/25 and the $300.00 amount.Nevertheless, the *** received asks for payment of the $300 already paid. Further, when verifying the balance online the amount shows as only $100.00 due and that only $200.00 was paid.On 01/20/2022 I attempted to reach Mr. by phone at ***. A woman there informed me Mr. was not present and agreed to ask him to call me back. Having not heard back, I called 02/04/2022 and left a message asking Mr. to call me back. I then called SimonMed's billing department at ***. I was told there I had only paid $200. When I attempted to dispute the statement the agent disconnected the call. I then wrote to SimonMed's billing email with these facts and corroborating evidence.On 2/11/2022, I received an email from SimonMed stating my case would be considered closed if I did not respond. I replied on 2/12/2022, "My case has not been resolved."Another *** arrived in March stating it is a final notice and claims $100 owed like previously seen on their billing portal but different from the first *** claiming $300.As I have paid the $300 owed ($908.74 - $608.74), I request assistance.