Already emailed them. Thanks for advice..
Now coming to the main issue. Now since my residency has started, I have to do calls ( night duty every third day ). For this reason I have to let my car sit in car park which makes my car so insanely dusty that i can barely look though wind shield the next day. There is also construction going on which leads to extreme dusting.
What should be the best way to protect and maintain my car ??? Washing and waxing weekly is not enough because my car gets dusty just in one night. Would it be all right if I use Astonish Spray And Shine for frequent cleaning and shining ???