Champak, the “super charge” the OP listed has no relation at all to the thread discussing superchargers vs. turbochargers. I have no idea what the “super charge” is on your bill.
The other thread was a discussion on the good and bad of superchargesr vs. turbochargers. When a “naturally aspirated” engine runs, the air is drawn in by the piston being drawn down the cylinder with the intake valve open. The amount of air drawn in is a result of the cylinder size, the stroke length, and the ability of the engine to breath in, the ability of air to pass freely by the valve and all the intake parts. The power the cylinder can make largely depends on how much air (with fuel) can be drawn in and compressed. Superchargers and turbochargers pump air into the cylinder, so that more air & fuel gets in there than the piston would otherwise draw in. Then, when the mix is combusted, there’s more power. The only difference between a supercharger and turbocharger is how the pump is drive. A supercharger is driven by a belt off the crankshaft, a turbocharger is driven by the exhaust gasses. Each method is better in some ways than the other and worse in some ways than the other.
Hyundaes don’t have superchergers. I have no idea what you’re getting charged for.
And, yeah, it sounds to me like they’re charging you for an oil plug every time they change the oil.
I caught that you said you’re in India. Is it possible for you to learn to do your own maintenance, with us to guide you? Do you have auto parts stores near you that might sell Maintenance Manuals in English?