I used the website to change my flight date GIG-NYC from August 21 to September 1. I need to stay longer because I had a surgery . I paid the fee of $500 with my credit card. Justfly send me an email requesting me to call 180********. I called and was put on hold for almost one hour and no answer. I am abroad and I don't have access to my home phone number. I am leaving my Brazil's contact number 552196****466. I need to be able to communicate with Justfly to be able to reeschedule my flight. Please contact me through email. Reservation#195-90*-*** Sonia