What legal actions woman take to stop harassment?

A person, A, took a loan from B approximately five to six years ago, agreeing to repay it with ten percent interest. Due to A's business going bankrupt, he has been unable to repay the loan to date. A is currently abroad, working to earn money for repayment. Meanwhile, B has passed away, and now his wife and brothers come to A's house daily, demanding repayment of the loan with interest. This has resulted in ongoing harassment of A's wife, who is suffering from high blood pressure. Whenever B's wife and brothers visit, it causes her significant stress and her blood pressure rises. A's wife has politely explained that the matter will be resolved when A returns to India, but they continue to harass her. What legal options are available for A's wife to seek police or legal assistance in order to stop this harassment?