Hello,
What's the current best alternative booking site for Aegean flights if I can't find them on the Aegean website, but want to book Flex or Comfortflex? I can fnid the itinerary I want on various websites (thanks to Google Flights), but either they don't offer Flex/Comfortflex, or they add charges, or I am not sure if I want to trust them.

Or is it worth calling in? Can they book these flights manually?

I want to book a oneway VIE-ATH-JHK. The Aegean website wants to send me VIE-HER-ATH-JKH the next day, which is silly. Yes, VIE-ATH-JKH comes with a 7 hour layover, but that's fine with me. The deeplink from Google Flights to Aegean doesn't work.