And is it legal for the brokerage company to ask for higher price than i bought it from bank
I am sorry, but your question does not contain enough factual information to allow me to answer it. Can you explain in more detail what you mean by "bought a house through the bank with installments"? Also, how did "the bank sell it to brokerage company"?
Not without foreclosing if the deed is in your name.
Probate law
I wish to decline a monetary bequest, I have been mailed a release letter by the estate's lawyer.
What must I do to decline the bequest?