Chill out DUDE!!!

people are just trying to help you. Remember that some fishkeepers on this site have been taking care of fish before you were born so give them the respect of trying to help you.
Anyway its sounds like you are missing 2 important parts of keeping fish: API test kit and a thermometer. The test kit is one of the most important parts of fish keeping, it should be the first thing to turn to when you notice that your fish are acting funny. High ammonia-dead feeder or something decomposing, High nitrites-overfeeding( and a couple of other things I cant remember right now),High Nitrates-not enough tank maintenance.
A thermometer to make sure that your tank is aroung 80dgr's.
Try to feed your oscars only on one side of the tank, that really makes them see who is feeding them and they might get to know you quicker. Spend more time around your tank.
Switch to pellets most of the time and feeders as a treat. Break out your 20 and set it up. Buy some feeders on Wend. so you can watch them for around 3 days and feed them real good then feed them to your Oscars.
You can also get crickets and nightcrawlers,oscars love them.
Just get a test kit and make sure that your water isnt toxic to your fish.
Read all the stickies in the health and disease section.
Hope this helps,keep us posted,good luck and

out.
john