Harrassment from credit carad recoveey sgent

You can contact local police station. Further you cannot aviod liability to pay the outstanding dues by approaching the police complaint. 

Dear Friend,

You must have received a legal notice by now. please reply to that notice detaling all such circumstances and further assuring them that you would make payment by so n so date.

Also, write them that your representative (write his name) is visiting at your home every now n then and threatning you and your family members, which is an illegal act. And if something goes wrong, Bank will be directly responsible for all the consequences thereof.