Various masaail of Nikaah

Q: Can the husband disallow the wife to use phone or social media to talk to her parents etc. without any reason when the wife does no haraam acts?

Q: My husband didn't clarify about his previous marriage to me in our Nikaah certificate. He mentioned that he was divorced from his previous marriage but after our marriage he disclosed to me that his ex is still his wife and I am his second wife. 

My question is that, is our Nikaah done or because of his statement our Nikaah is not valid? Please clarify.

Q: I would like to know as a wife, whether it is a right of mine that my husband spends some quality time with me after work and Esha or is it just me being demanding and ungrateful which is how my husband sees it. Most nights he is at his friend's houses till 11 or 12 and then comes home when I'm already asleep after I've been waiting for him for hours. 

Anytime I bring up an issue, he tells me the hadeeth about the women being the greatest inhabitants of jahannam due to their ungratefulness and keeps saying it's in my nature as a woman. I need to know whether I am just being that type of woman and I just need to be fine with not seeing my husband and just be content that he sleeps next to me at night when he does come home.

Q: Is it permissible for a husband not to have access/communication with his wife for 3 months based on a decision which was by her family... We are separated for 3 months..

Q: What is the ruling on a girl seeing her family after she is married? Is it permissible that her husband can forbid her from seeing her family and her friends? In the event that the husband has no valid reason for forbidding the wife from seeing her family.

Q: I've heard girls say that they romanticize their future by making up imaginary scenarios of them with their imaginary (non -existent) husband like holding hands, forehead kiss, etc. Is this fantasizing? Will one be sinful?

Q: Is getting married to someone so that she can make khidmat of his parents correct or should the decision be made more on shahwat for the person?

Q: Is it ok if I don’t want to get involved in polygamy because of love for my wife? Someone said that it is sinful and exaggerating, is it true? Someone said this this statement and it disturbs me. I don’t think it’s sinful because it’s not obligatory and it’s totally a man's choice. Please guide me.

Q: The sons in a particular family insist that for the sake of keeping family unity, their wives should invite the entire family (their mother, siblings and siblings spouses and kids) for a meal. And that their mother and sister are entitled to stay a few days every once in a while at the son’s house. If the daughter in laws complain about the amount of work it takes to host a meal for so many people, the sons become very angry and fight with their wives until they agree to host.

There has already been so many divorces in this family. Who is right and who is wrong? The sons, their mother and sister for constantly imposing on the daughter in laws or the daughter in laws for not wanting to entertain guests?

Q: If a widow remarries, which husband will she be with in Jannah?