The April increase will always be applied to new contracts and to renewals unless you have it clearly removed in writing.
OK - so it sounds like the 'minimum three months' is sales fiction.
What isn't clear to me yet is when the contract starts. Is it from the very moment you have agreed to get the service, or when the service gets intalled? T&C's state that you have a 14 days cooling off period from the latest of those dates. So, if I got the service installed in April 2024, it is still is unclear to me whether I will get a price increase in April 24 or April 25 or both!
