I requested a refund for 3 tickets on the same AA reservation on MAR 23. One of the refunds was processed and refunded on APR 5. The other two are still pending a month later now. Can anyone explain why that is?

When I call or reach out to American on twitter, I am told to keep waiting, but they can't explain why only one ticket was processed and why others on this forum have been getting refunds when they submitted them much later than me.

Does anyone have any suggestions on how much longer I should wait or where I can go from here?