Pegasus Changed Flight, Cancelled My Paid Seats, And Took My $120

I had a booking with Pegasus on flight PC399 on 5 February 2026, under PNR 1B8HHR and the email address v.sergee***@yandex.ru. Pegasus later changed the flight number, and as a result my previously purchased seat selection was canceled. Although I had already paid $120 for this service, it was not transferred to the new flight. After noticing that my paid seat selection had disappeared, I contacted Pegasus and requested a refund of the $120. So far, I have not been given any clear explanation. My refund request is either automatically rejected through the system or I am told that the case is still under review, but no refund is issued. In the chat with Pegasus Assistant, I was informed that the refund is supposedly pending with the finance department, yet nothing has been processed. I also have an email confirming my request under the reference number 14119683. I request that the $120 I paid for the canceled seat selection, which Pegasus failed to provide on the changed flight, be refunded to me as soon as possible.