Is my action of not visiting my fiancée and not opening a dialogue with her father after feeling insulted by him considered an injustice to him or a right of mine?

Forgiveness and overlooking the mistakes of others are among the praiseworthy manners encouraged by Islamic law, and Allah increases the servant in honor through them. This was also among the manners of the Prophet, peace be upon him.

There is no blame upon the man who prevented you from entering his house except at a specific time, for houses have their privacies. Allah Almighty has commanded seeking permission when entering houses and returning if asked to do so, and that is purer for the soul.

If the man tried to clarify the reasons, it is better to be frank with him about what is on your mind, especially since he will become your father-in-law in the future, and the Prophet, peace be upon him, emphasized the importance of in-laws.

It is not permissible to frequently visit the fiancée or sit with her, even in the presence of her mahrams, because the suitor is a stranger to his fiancée until the marriage contract is concluded. Communication should be limited to necessity, while observing the Sharia guidelines.