You gotta eat some crow.
Get a Thai friend/girlfriend to go with you as a speaker - go back to the "old neighborhood" and apologize to the neighbor you complained to the police about, say you were out of line and didn't understand... bring an olive branch peace offering, a box of chocolates, cookies if the neighbor has kids...
that's the starting point (i.e. what I would do if I were in your shoes)
But, you do have to fix this problem - on the basis of what you have posted (and edited) it most likely will escalate