Kotak Mahindra Bank — credit card recovery agent harassment #[protected]

Wanted to raise a complaint against your credit card collection call center. I have been receiving multiple calls from a number[protected]. She claims to be kotak employee and sits in noida 125 branch. Please be advised that i am not and have never been a customer of kotak mahindra bank..
She is calling me with respect to credit card of a family member. Please note that i do not have links with him since last 5 years and neither i am his authorised person. Which she claims that i am.. She has been mentally harassing me by calling me continuosly. Not only troubling me but she is calling random people in my office and discussing about the credit card details. I have been polite with her and forwarded the messages to thru some known sources. Since i am nowhere involved in this matter still i am getting humiliated and mentally tortured as she is calling me and my office staff continuously. This has caused an reputational loss for me. She is also pressurizing me that if the payment is not done i will have to make the payment. I fail to understand if this is bank policy to ask someone else to make the payment on someone else's behalf. She is forcing me to say on recorded line that i will make payment. Also i have requested her not to call during my office hours however still she calls me during those times and this is literally troubling me now. I request you to please look into this matter and assist me. She literally torturing me now to make payment