The previous reviewer is not the only one complaining. A valid claim for refund is being ignored. I am advised to call back every 'few weeks' to see if their system registers the bike return (which bike is sitting in the cradle of their docking station as I write this). They will then 'consider' a refund. Locking my credit card did no good as it appears their penalty charges are classes as 'auto payments'. This was not something disclosed on the hire system. I would never have rented this bike (for all of 20 minutes), if I had known through their faulty mechanical systems that I have been improperly charged $500, with no remedy.