Had a Visit at Hyundai sajjad motors jailroad.
The issue was same as mentioned few pakwheels fellows (fsx, baleeno).
Heater hose (something) got leaked. But original part is around 9k and the other one is 2800 rupees. 1500 is labor and other small parts (bolts etc are excluded from this price so if any other part is required would cost me in separate).
For the time being I didn’t go for it but adopted alternative to close the hosing connection with heater (cost me 150 rupees).
The leaking problem is fixed now but heater won’t work. (A/C is working fine).
I would fix this issue by replacing the part after some time.
That’s the update from my side and thanks for the replies guys.