One complainant told Marketing they had been made to enter their credit card details six times while attempting to book flights worth £800, while receiving no confirmation of the booking. The glitches come at a critical time in Ryanair's customer services overhaul, and days after it announced Kenny Jacobs is to join as the brand's first chief marketing officer. The complainant called Ryanair's call centre twice to try and rectify their booking issues, and was told not to use the Chrome or Safari browsers in order to book flights, but instead use Firefox and to delete all cookies and browser history.