I was charged more than once
The ride payment process takes place in a few stages. First, funds on the card are temporarily reserved. This may look like repeated debits, but this operation is not a payment and will disappear from the bank statement within a few days. The money is withdrawn within 24 hours after the funds are reserved.
Typically, the final cost is held on your card at the end of your trip. In some cases, however, parts of the total cost are reserved at various points during your ride.
If the price changed during the trip from the amount originally calculated, the reserved amount may differ from the amount actually debited.