[quote]I tried to forcefully edit the Sensitivity Setting in the game files using a 3rd party software[/quote] Doesn't matter if you were successful or not - the attempt was made to alter the game files and that alone warranted the ban. Now you can try to appeal the ban, but given not only your own admission of attempting to alter the game files as well as Bungie's own internal data on this incident - I seriously doubt your ban will be repealed.