Fiat Palio — another pathetic service from prerana motors

I had given my palio diesel for service at prerana motors, old madras road in bangalore.
It was just a routine service.
But my experience was very bad and pathetic with them.

First I had to take my car twice after the service..
first incident, the plug to the filter was not connected. I noticed and taken the car to the service to center to get it connected. Again next day I noticed that the coolant is leaking and when I checked the coolant box was empty. Again I took and they said the nut was loose down below that why it got leaked.
Then instead of coolant they just filled water in that.

Again in the bill there are lot of discrepancies.
I had to pay 5000 instead of 3000 last time.
In the bill it says they will engine oil petrol for a diesel car which has double the rate.
And also they doubled the labour charge.

It is very pathetic, they just trying to squeeze the customers .They are just running their as many customers wont enquire much on these things.