Apologies if this isn't the right place to post...

I had booking on Eurwings flight EW0465 - LHR to Cologne-Bonn on May 10th. I have just received an email describing a "change to my scheduled flight" that actually has me now booked on a different flight number (EW9467) approx 2.5 hours earlier.

My question is this; am I now able to ask for this booking to be cancelled and refunded? In other words, do I have the right to request a refund? I understand that what has essentially happened here is actually NOT a change to my original scheduled flight, but it is essentially a cancellation of my original flight number, resulting in me being moved to an alternative scheduled flight with a different flight number.

I had understood that the rules here were that Airlines could ask me to accept a reasonable (non-significant) change to the scheduled departure time for the flight number I had booked (all covered in their CoC etc etc). However a change in flight number was essentially treated as a cancellation of my originally booked flight and that in these cases customers should be offered a choice between a re-booking or cancellation+refund. Is that not correct?

As you have probably guessed, I am looking for an opportunity to cancel these flights. It was non-flexible fare and so I was originally prepared to play a waiting game to see if the flight was cancelled anyway, nearer the departure date. But am now trying to determine (before I attempt to contact them) what my rights actually were in this case. Can anyone help (without flaming)?