On November 2016 I bought a Wizz Air ticket, paying by credit card. The flight is in June 2017. Recently my friends, also interested in travelling to the same place as me, were checking flights and noticed that on the day and route of my ticket Wizz Air says there is no flight. It's like this for at least a week. I have received no notification about flight cancellation or any other message from Wizz Air.
Should I worry that I no longer have a flight, or is this just Wizz Air's poor way of showing that the flight is sold out and no longer available for new passengers?
Also, is there a way of contacting them which doesn't involve calling the premium rate number of their call center (an email address would be perfect)?