R130 and R136 were debited from my account on the same day

R130 and R136 were debited from my account on the same day. The R130 has not been reversed as they said it was a pre-authorization. The R136 was deducted again after a trip, resulting in a total of R266 for a trip that was displayed as R110.00. Can someone please explain this to me? Why are you deducting more than what was initially indicated? This feels like ******* of my hard-earned money.