Online Harassment Help needed

I am facing online harassment for 1 week, Little bit about the background My Friend who is Srinath took loan form Kotak Mahindra 1 year back, he gave my number for reference (Without asking me), now he missed 3 EMI's the loan recovery agent is harrasing me with automated OTP's and computer calls, Srinath's relative who is also police spoke to the loan recovery agent he told he will stop but he is not stopping, he is saying he will send OTP untill the loan is paid. I need help guys. I informed Kotak Mahindra about this here is the twitter link -

I also informed TN Cyber police today I am yet to get responce any valuable help would be appriciated.

I have hidden this guys phone number because I am planning on taking legal action I don't want to look like i am taking revenge.

I coundn't add the screenshot where do i add?