If I was Santa, I'd be a little overwhelmed by the 'advice' he's getting.
Sounds a terrible situation mate. The city where I live has these Somali bastards - my brother lived near one of their dealing grounds as a student.
They are diddlying bananas - talk about tribal.
I hope you can find a solution - but I'd move out, until things have settled. You can always let a neighbour get the mail for you and forward it on.
Take care mate.