1)Sir are they allowed to arrest my father at any instant . They are threatening as if we are like some criminals . We did not react to any summons we sent it back that the person is not peesent
The police cannot arrest without a arrest warrant. There is nothing wrong in returning the summons back since the person is not living at your house.
2) can warrant be issued in my fathers name
It depends on the court and not the police.
3) there have been 8 summons issued and the next hearing date is 12th of this month
Since your father has not signed and received a copy just dont be bothered about it, the court will take decision accordingly.
4) do my father has to present in front of the court
If he has received the summons, yes.
5) i dont want to my father to be present in court can we send an advocate instead as they are life threateners
NO