Th e worst customer service ever! I called them to...

Th e worst customer service ever! I called them to cancel a flight because we couldn't get the VISA on time. The cancellation policy in the ticket I have, clearly says that I am going to be charged a specific amount at the time of cancellation(any time) and can get the rest of my money back. The guy on the phone kept shouting at me that there is no cancellation policy on your ticket. I read the policy for him, but he just kept repeating himself in a very rude way. This is the last time I am buying any ticket from them.