At the company I am currently working we are expected to have a yearly salary review. In order to schedule a meeting with my manager to discuss this I have sent several emails/chats. He reads all of them and replies with "sure, do you mind talking about it next Monday?" or "right now I´m busy, is it ok for you to do it tomorrow?" answers. But when the day arrives he always "forgets" about it or throws an excuse such as "I gotta pick up my kid from school right now" and moves the date to another day.
I have suffered this same behavior when dealing with other stuff, such as asking him to approve my vacations, and I truly believe he is always busy doing management work, but what really pisses me off is that reviewing my salary should be one of that management work although is never in his schedule.
Therefore my question is, how should I approach this situation so I can have my yearly salary review meeting without pushing too hard? I believe that pushing too hard can be considered rude and I am scared that this can backfire on me in the expected meeting.
Note: Although the "picking up his kid from school" may look like a lie, I believe that is true since he sometimes shows up in meetings/calls with his kid, and a couple of years ago he had paternity leave.