I also contacted him but they are doing installation without a vaccum pump. However, he said that vacuming will cost an additional 3K and the regular statement that it is not required for a new unit. But he didn't reverted back when I agreed to pay additional amount along with installation charges. It would have costed me 5K.
Long story short. Daikin team showed up the next day with a vaccum pump and installed the unit. Their charges are 7K PKR.