They name them like Muslims,
they take refuge of Christianity, Shia'ism, Judaism, Sikhism where ever they get no answer from the teachings of Islam.
They believe Isa pbuh was died. (christianity)
They Believe Their Mirza Gama Kidhab, is rebirth of Isa pbuh. (concept of rebirth taken from Hinduism and Sikhism).
They believe Isa pbuh will still be a Prophet, (violation of holy Quran
[3:81. Behold! Allah took the covenant of the prophets, saying: "I give you a Book and Wisdom; then comes to you an apostle, confirming what is with you; do ye believe in him and render him help." Allah said: "Do ye agree, and take this my Covenant as binding on you?" They said: "We agree." He said: "Then bear witness, and I am with you among the witnesses."
3:82. If any turn back after this, they are perverted transgressors].