Here are some of consequences of unexpectedly charged :
We have high duplicate query rate (over 50%) for most ours APIs (Geocoding, Distance Matrix, Directions, Places). please ask the developer to do the code review for loops or incorrect retry logic and fix it.
We have somes unrestricted API keys (check the transferred mail).
. These issues raised are very important for us.
-Android Cab App.
-IOS Cab App.
-Laravel Back end.