Inconvenient way of changing a ticket and bad service of the ticket-line

<p>I had to go to another province on bussines and so I have to change the date on my tickets that I bought online so I phoned the ticket-line and the guy that answered the phone sounded like he wasn't sure of what I am asking and he gave me a long pause and answered 'uuuuhhh no we can not do it you must go to the place where you booked the tickets' didn't even give me a cance to explain my situation, nothing and he just said "sorry bye". I really think there should be another way, what if I was atmitted to hospital (example) ? I don't think this is very affective way of changing info on your ticket!</p>