In terms of unravelling this, then unfortunately you will just have to wait to see what happens, and a lot will depend on what was said by you and the agent on the tape. So that is just a waiting game.

In terms of future avoidance, the key aspect here - and this will feature in the investigation - is towards the end of the call when the agent is supposed to read back in full the newly booked schedule. Since they are reading it off a screen it would seem unlikely they would read out 2025 if it said 2024, but things can get stuck in people's brains. It sounds like a fairly straightforward human error here, and I hope that BA can rectify the issue. The voucher means you can't do much until that is resolved, however it is done. At least there are clearly notes on the file stating that you immediately contacted BA with the problem, that will help a lot.