I booked a ticket on Fly.co.uk two months ago but the payment failed. I thought they had problem making the transaction, so I booked on another website. A few days later they emailed me that they noticed I had booked a same ticket with another agency, and that if I did not reply that email, the flight would be canceled and I would be imposed charges. I was afraid they would charge me for not replying, so I replied to cancel the ticket. Then, they have kept emailing me to request a cancellation fee of £ 100. And now, they even request £ 112.5 (plus a reminder fee of £ 12.5). In the email, they say if I do not transfer the money by April 16, 2014, they will sue me and I will pay more (including the attorney fee and court fee).
Could you please tell me what I can do? I really do not want to run a risk to be sued, but I don't want to pay this unreasonable money, either.
Thank you for your help.