Daming a/c shops na yan ang raket. Basta cleaning palit exp valve and drier agad. I never trust those shops.

If it is leaking in the cabin. Open your engine bay and look at the rubber hose drain for the a/c (passenger side). Use a wire or stick to poke it and check for any blockages (happened a lot on my old Kia).

Another cause might be an improperly installed drain hose. Stand on your head inside the passenger side footwell and do a visual check.