Where can I change my ticket since the Avianca counter at the Miami airport is closed as well as the offices. In the call center, neither WhatsApp nor via wer understand the requests

More serious due to the global contingency the flights are at 5am and through the call center they should be able to assist us. In the end we had to call Colombia to make our modification since in the US we did not get a response from Avianca

You have to go at the time of a flight, there is a girl who is dedicated only to ticket sales, exchange, etc. The priority is the passengers of that flight, but if the line is alone they will gladly assist you.