ptc
You have my sympathy.
Luckily, A Lurker doesn't represent the majority view. Just the view of a few who display people skills for the benefit of a job interview, and sometimes lose the empathy side when they actually do the job.
If they were in the same situation as yourself, they would probably done the same. Let's face it, for CC job, BA is one of the best to join in the UK. If you had said no to BA's offer, I reckon you wouldn't have been confident of getting another call from them, once this dispute is sorted out.