All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
In principle, what is considered in divorce is the statement of the husband; so, if the wife claims that a divorce took place and the husband denies it, his statement will be accepted.
Furthermore, scholars have differed on the ruling of divorce pronounced in extreme anger, as well as on the ruling of issuing three divorces consecutively in one sitting without any reconciliation or having a marriage contract between them. For more benefit, please refer to Fataawa 121374 and 168591.
Hence, as long as there is a scholarly disagreement regarding this matter, the correct approach is to present the issue in person to a knowledgeable scholar at Islamic centres in the questioner’s country, or to other trustworthy and qualified scholars.
Allah knows best.