How long does it usually take to confirm an order? Is it possible to cancel the order ?

Confirmation within two days, cancellation only has higher order price, I was cancelled. More expensive orders are confirmed

My booking was cancelled. I rented one directly at the counter later.

I've never had an order cancelled. Even once when a flight was delayed and resulted in serious over-run (collection was scheduled for the morning but didn't happen until the afternoon), the order wasn't cancelled after explaining the situation.