I think I avoid these problems because I refuse to deal with Filipinos in regards to any kind of business FULL STOP.
Stay in the back ground and act ignorant!!!..
If you are approached by anyone official looking,just shrug your shoulders and speak in a broad Cockney accent..."Gord luv a duck me ole sparra! Ows yer bees off fer huney"??
This is their country and you will never win if they decide not to let you..