Wirelessly posted (Mozilla/5.0 (iPad; CPU OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3)
As UA is a member of the IATA they should follow the IATA rule. That being said expect to end up paying the charge and then disputing the charge with or without success.