I booked a flight on May 22, 2019 then I immediately (10 mins after booking) called their customer service to cancel the flight booking because our companions are not available on that date. Their agent Adolf Wilson told me that the tax will not be refunded. He cancelled the flight booking immediately without explaining to me the amount not to be refunded. He should told me before the amount for us to decide before he cancelled it. They just refunded the amount of fare but not the tax. Why are they like that? They should have explained clearly and they should refund the full amount because I cancelled it immediately.