I flew JFK-LHR route in the beginning of April and paid some excess baggage fees. I wanted to use travel vouchers and had an argument with the agent who didn't want to take it initially. He made me pay with a credit card first but then found somebody knowledgable to show how to use a voucher. So he refunded the credit card charge and used a voucher. Unfortunately the charge showed up on my statement but the refund didn't. I called AA main number and they instructed me to e-mail via AA web interface. It has been a week and I didn't get a reply or even any acknowledgement they're looking into the issue. I'd like to give it another try before I dispute the charge via my credit card but it looks like I need to contact the appropriate department directly, otherwise nothing gets done.