May Allah shower His mercy upon your family. He divorced you once and then he revoked his divorce. There is no problem for that. Later he divorced you thrice in one sentence. This type of divorce has been interpreted differently among scholars. The massive majority of scholars regard it as full triple divorce and in this case you are not allowed to return back to him and it becomes prohibited to touch or even to mingle with him since you have become a foreigner to him.

 

According to another group of scholars including `Umar ibn al-Khattab, Ibn `Abbas, Ibn Taymiyah and Ibn al-Qayyim in addition to Shaykh Ibn Baz and others who maintained that divorce in this case is reckoned as one  divorce. If we apply this view to your case, it becomes evident that you are still his wife with full rights of a wife.

 

There is no meaning of slave girls in this case. He is either ignorant or intentionally attempts to abuse you. In case he divorces you a third time, you will become prohibited to him and he will not be able to revoke divorce or return you back to him until you wait for three consecutive menstruations, marry to another man, such a second husband consummates marriage with you, divorces you willingly and you wait for a waiting period of three menstruations.