They deducted 50 rand from my account even though the driver had no yet accepted the trip

They deducted 50 rand from my account even though the driver had no yet accepted the trip. When i saw how long its gonna take for the trip to come to me I cancelled but no driver had accepted my trip but they deducted 50 rand from my account. So why did thy deduct money while no driver had accepted my trip and the app was still searching for drivers