Changing your mind
The legal right of withdrawal (retracto, five business days) applies to sales financed by the seller, timeshares and sales made at a distance or away from the shop. It does not apply to a service that has already started with your agreement.
A pass bought and paid for in person at the counter is usually not one of those sales, so ask the counter about its own refund terms before you pay.
Source: Ley 1480 de 2011, articles 5 and 47 – official text