i was about to write everything together but since you asked, a small update-
the car is ready & the bill amounts to 29k. but the A.S.S also mentions of a fault in the alternator. since we are in no mood to repeat our earlier mistake (of ignoring the A.S.S's findings), we give them a go ahead sign to repair the alternator too. the SA told me that the alternator will be directly sent to the Bosch authorized service centre & serviced & that it will cost around 5k. a day later, i get a call from the SA that the amount will be 6.5k as an oil seal has to be replaced. i ask them the price of a new one & they say it 8k. so i told them to install a new alternator.
so the new alternator will be fitted & i will be getting the car in 2-3 days. bill amount will be close to 38k!!!