Debited Twice

I booked and paid for my tickets on the 28th April. On the 30th, BA debited me again. It took me 2 trips to the bank (over my long weekend) to get confirmation that it was in deed BA's transaction that went off twice. The reversal of the 2nd (and unnecessary) transaction could only be processed on the 3d May. I spent 32 minutes on the phone to BA, with no success in being helped. As a result, not only did I spend the whole weekend fighting with my bank (who wasn't even in the wrong), I ended up paying all my accounts late as I had to wait for the transaction to be reversed. I really hope you can compensate me for the inconvenience caused.