Evil neighbours

We are extremely worrried about the security situation of our housing complex, generally known as "our society". Earlier this week, some guests to our neighbouring 'society' were hurt by some unruly elements in their premises. However, the administrators of that society said we had a hand in that untoward incident. This, they said, was our attempt at getting back at what people from their society did in our premises recently.
About 3 months ago, a bunch of their armed and dangerous residents walked into our society and indiscriminately hurt people in ours. We even managed to capture one, who confessed that he is from the neighbouring complex. But their administrators refuse to accept either the confession or the evidence we provided to them in the form of the vehicles they had used to enter our society.
We even appealed to the chief of the most powerful society in the city to put pressure on the office-bearers of this evil society so that the masterminds behind the tragic event could be caught and punished. But that society is itself grappling with severe financial problems caused by too much greed and extravagance.
Actually, we do not know what we have done to incur the wrath of our neighbours. We have always been kind to them. We have provided financial assistance sometimes and engaged in the most civilised behaviour by opening up a small route between the two complexes so neighbours can visit each other. We have had cricket matches between our respective team both here and in their premises. None of this has helped. They have continued to send in some trained miscreants who sneak in to our complex, steal our bikes, etc, burgle flats and hurt our residents.
While the neighbouring society administration refuses to accept responsibility, it continues to blame us whenever something wrong happens in their premises. They also indulge in systematic training of their people to come into our society and create trouble. In fact, there is a small area between our two premises, which actually belongs to them, but they seem to have lost control over it. Now there are lumpen elements living there, doing as they please and running riot, potentially threatening our security. The next-door management is so weak and useless that they even entered into a pact with these outlaws wherein they would not trouble them as long as they did not bother their other residents.
It is not that the security personnel at our security are stupid or cowardly. They are strong and raring to go. Just us give us a free hand and we will go kick their butt they say. But, then, our office-bearers are the wimps. Every time there is an election, they campaign saying they will straighten out the unruly neighbours. However, once they are in power, they start making grandiose gestures of peace and extend their hands in friendship. In turn, we get kicked in the teeth.
Maybe it's our fault after all. We are the morons who keep putting these wimps into power again and again.