Fair point about 'the' versus 'any', and I agree the statement as quoted is a bit abrupt, especially given the nature of the story.

The actual quote I gave to the journo was longer:

"Ms. Mendosa was eligible for an off-peak ticket, so this was a complete mistake. We're sorry for any inconvenience caused and have given Ms. Mendosa fare vouchers for future travel as a goodwill gesture. We have also begun an internal investigation to ensure this doesn't happen again."

The Bristol Evening Post version uses the full quote: http://www.thisisbristol.co.uk/news/Train-firm-sorry-ticket-mix/article-3070754-detail/article.html