There is more to it than meets the eye - Optimus Prime.
You should direct your complaints to the Sabah State government then because according to the agreement, they have near-autonomy as far as running their state is concerned. The other thing that you can do is to go and stop those boats and bombers themselves. There is only so much that the government agencies can do with limited manpower and materiels, and they are more concerned about terrorist groups infiltrating the border as far as Sabah is concerned. Letting the Filipinos in here has a lot to do with saving lives. Yes, they shouldn't bomb reefs etc. One or two may be caught. but it is like the traffic police trying to enforce the helmet ruling in the kampungs. But don't saving lives mean anything to us anymore? This is not just about the Government of Sabah or the Federal Government of Malaysia. This is also about the request by the OIC for us to give assistance to them since back in the 70s.
I was a military personnel, and have been there. You can ask the rest who are still in service like Mocha, Stonefins, Putradiver and Maritimers on how vast the sea is and how much can we do in policing our waters, and how to balance things without upsetting too much.
The root of the origin is in the Philippines. And believe me, like in Southern Thailand, the government is doing something in those places to try help them.
So, if you think you cannot physically stop the bombers, then I suggest you report to the MMEA and let them do their job as best they can. Other than that, just highlight in the papers or write to Azmi Khalid. Every single little steps that you take will contribute to the well-being of the reefs in Mabul and elsewhere. But do only what you possibly can and don't try to save the whole world in one day.