Refund for overcharge

I booked a flight and missed the boarding time went to pay for a second booking and the lady that assisted me was Rona if I am not mistaken she was busy gossiping about the ladies that check bags instead of focusing on what was happening with my transaction, she charged me 3 times for the payment which I tapped for cos she said it didn’t go through. I waited for the sms to come through and pointed it out to her that i was charged multiple times she calls the manager and says she will log a refund but it was only happen next week this was logged on the 13th December 2025, how long does it take to get approved and refunded? The staff give the airline a bad name.