Calling upon Prophet Muhammad and asking of him, besides Allah, and seeking his help is a major Shirk (polytheism) that puts one beyond the pale of Islam.

Asking for help from anyone other than Allah is a kind of calling upon (or making Du`a to) someone other than Allah, hence it is a kind of shirk.

There is nothing in the Quran or the Sunnah to indicate that Prophet Muhammad can hear every Du`a or call from human beings. Rather it is proven that the only thing that reaches the Prophet is the blessings and Salams of those who send blessings and Salams upon him.

There is no basis for regarding ringing in the ears as good or bad omen in Islam. The Muslim has to put his trust in Allah. Regarding things as bad omens is a kind of belief in evil omens, which Prophet Muhammad declared to be false and stated that it is a form of polytheism.

The believing woman should be content with the fact that Allah has prescribed polygamy, and she should believe that there is wisdom in it and that it serves an interest. She should not resent this ruling, even if she has a natural aversion to the presence of a co-wife who competes with her, just as men dislike fighting a war.