How can a spanish speaking person testify against a crime?

In a 5 unit apartment building strangers came over, they were stealing mail and if that isn't enough when they were confronted they impersonated internal revenue agents. One of them even flashed a phony badge. The trouble here is that there was some sort of identity theft issue later. A cell phone photo was snapped by one of the apartment's tenants but the trouble here is that the main witness knows nothing but spanish. So the crime remains unreported and there is a tenant there having credit card identity theft issues. Is there anything that they can do?