How many times do you think you need that apology, you get it and yet the behaviour continues?
This is often a theme in a therapy sessions, where a client cannot get past the hurt they are feeling until they get that apology from their loved one, their friend or their colleagues. However, then the behaviour continues, maybe the same, maybe slightly different.
Where are you now? Where are they? After all they have apologised for what you asked for.
Sometimes the only way, is for you to change your behaviour and in that they can learn to change theirs.
We cannot expect others to change, to learn or to grow, only you can do that.
How much is that apology really worth?