Whirlpool India — A/c installation

I have purchased a 1 ton whirloool ac on 14.04.2016 which was delivered the next day 15.04.2016.

I had purchased it from adhishwar electronics marathalli, bangalore.
Whirlpool technician and adhishwar electronics promised that the equipment will be installed by 17.04.2016.
The technician called me and informed that they will come definitely come by 18.04.2016.
Today i called them again for which they said the installation will be today.
I thought of getting help from their customer care, which is of no help.

Am wondering now whether it will be done or i should return their product.