How to render a good service?

Always CHECK to% perfection.

Even minute parts need to be checked even though if it is not asked for to maintain a good quality service.

Change of parts should be asked to the customer before changing.

Parts changed are to be well placed as well as to be checked whether it works.

Place him a call only after all works are done, checked and billed. So he dont have to wait so long to get his vehicle serviced.

And at the most CUSTOMER SATISFACTION should be maintained in which everything relies.