My Lufthansa flight was cancelled due to the Covid-19 pandemic. Unfortunately, I closed my Chase credit card account in early 2020 (the original form of payment). I informed Lufthansa that my account was closed and customer service forwarded my alternate bank details to the refund department. However, Lufthansa processed the refund to the closed account in August 2020. In early October 2020, I was able to secure documentation from Chase Bank that the refund had been returned to Lufthansa's bank. Upon receipt of this documentation, Lufthansa customer service stated that their accounting department would investigate and they requested my bank account details for a bank wire transfer. This was nearly 6 weeks ago and my last few emails to Lufthansa have gone unanswered. Any assistance would be greatly appreciated. I feel that I have hit a roadblock in my quest to obtain my refund, despite the fact that Lufthansa has acknowledged that I am due a refund and they are in possession of proof that it has been returned to their bank.