Cómo me comunico con British Airways desde Argentina?

In the event that you have issues with your Baggage, Delayed Baggage, or harmed Baggage, you can contact the Latin America administration number (+54) 11 5480 0503 or the line +52 55 5785 8714 during business hours from Monday to Friday

https://www.airtravelmart.com/es/articolus/como-me-comunico-con-british-airways-desde-argentina/