Business Loan — harassment

since past few days my family has been receiving threatening calls from one of the recovery agents of hdfc bank ltd. inspite of the fact that i have informed him that i have not taken any loan and the loan he was talking about belongs to another person and my name was used for reference purpose The telephone number from which the calls are being made is [protected] and told me that i have been sent by mr.Rana [protected], yesterday he came to our house in the evening and start shouting with abusive language and start insulting my parents in front of our neighbor, I am neither a guarantor to the loan taken by him nor have i at any point of time taken any loan from hdfc bank ltd. You are requested to let me know what are the options available to me to bring to task the recovery agent and stop this harrasment by hdfc bank ltd. .