If you have a contract it is not unreasonable to expect that if you keep to your side of the deal, the other side will honour their part.
If they don't, you can ask them nicely to desist and stick to the deal.
When they continue to ignore your requests and still don't keep to the deal, what do you do?
Do you just carry on regardless or do you back out and seek compensation?
The "bad guys" are AEI not Ryanair.