Upvote:6
What to do if an EU airline cancels your ticket without notifying you?
If the airline provides a suitable alternative, nothing special.
If the airline does not provide a suitable alternative, buy another ticket and demand recompense.
Do customers can make a complaint or are covered in any way in these situations?
Yes, customers may (in this case probably should) complain.
Yes, there is cover - to refund or find you alternative transport.
Airlines are never normally responsible to passengers for consequential losses – the contract is only for carriage. Insurance may however do so.