All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad is His slave and Messenger.
Divorce may be issued with an explicit (sareeh) or implicit (kinaayah) wording, and it may either be an unconditional pronouncement of divorce with immediate effect (munjaz) or conditional (muʻallaq), i.e. subject to a condition in form of an oath or assigned to a future event, and some wordings are declared by the sharee'ah as a mere promise of divorce. The religious ruling differs according to the kind of the divorce issued and the wording used by the husband.
Scholars held different views regarding certain wordings of divorce. You did not specify the exact wording that you have used in the three occasions; therefore, we cannot pass a judgment in this regard (given the inadequate information). We advise you to refer the case to the concerned entity responsible for addressing the disputes among Muslims in your country of residence or to consult a trustworthy local scholar directly.
We would like to highlight that the husband can benefit of the prescribed ways of rectifying marital problems instead of hastening to divorce, which should only be the last resort. Both spouses should fulfill the rights of one another and maintain mutual respect so as to foster marital stability and preserve their family.
For more benefit, please refer to fataawa 92649, 90416, 82541 and 83467.
Allaah knows best.