Lost phone / no access to my account



i moved to Brazil, and my phone was robbed, with my Revolut account in it.
I already change my phone number for my new brazilian phone number when I arrived in the country.

I try to enter the app, but i can’t enter a brazilian phone number (+55)…
So i enter my old phone number just to try to get in touch with a live agent, but there is no option to enter the “chat” …

What can I do ??

Thanks for your help