Eating a kind of home made curry is probably not the worst thing you could do, but you will have seriously high salt levels if you eat ready meals every night of the week which of course is terrible for your arteries. You will also be taking in high levels of saturated fat, also bad for the arteries even if you are underweight.
You can't make your parents change their eating habits no matter how hard you try; but it is important that you take responsibility for your own health. Buy yourself a cookbook and learn how to make proper dinners. Don't continue eating this way if you are worried about your health!