Warte noch immer auf die Erstattung

On October 3rd, 2019, I sold a ticket for Taylor Swift. The concert was canceled. In order to claim the original ticket price from the original ticket provider (eventim), I reclaimed the ticket from you from the customer. Unfortunately, your customer did not return the ticket to me. I then had multiple telephone and written contact with you. You have assured me that I will be reimbursed for the original ticket price. On July 20, 2020, I received a notification of a penalty fee, as allegedly I had already been paid the sales price. But that was not the case. I then contacted you to to clarify the matter. During my last statement on May 28, 2021, I found out that you had actually charged me the penalty fee. I've been waiting for the purchase price reimbursement for over a year now. What happened is you charged me an unjustified fine. I ask you once again to deal with this issue and, on the one hand, to reimburse me for the original ticket price and the incorrectly booked penalty fee. Please help me.