DUBLIN Ryanair, Europe's biggest budget airline, has promised to transform its "abrupt culture" in a bid to win customers from costlier rivals, admitting for the first time that a reputation for treating its passengers badly might have become a problem.The Irish firm, this week voted the worst of the 100 biggest brands serving the British market by readers of consumer magazine Which, said on Friday it would become more lenient on fining customers over bag sizes and overhaul the way it communicates."We should try to eliminate things that unnecessarily piss people off," Chief Executive Michael O'Leary told the company's annual general meeting, after several shareholders complained about the impact of customer service on sales.He said the company would overhaul its website, set up a new team to respond to e mails and stop fining customers whose carry on baggage exceeds minimum sizes by a matter of millimetres."A lot of those customer services elements