Kotak Securities — KYC Mismanagement / Identity theft.

I took a personal loan from Kotak securities for personal reasons(In July) and 1 month after I got a call for a credit card from Kotak bank (August). I do not know how but someone maybe from the employees took my details and bought a Phone, I did not provide them with any original document (for the credit card) but somehow it was processed without my knowledge/consent. I have been to the Kalyani Nagar Branch many times, but no results. ruining my credit score. My SIBIL score is too low right now. Please ask them to remove it from my PAN. Also due to my different sign in my bank account. they were unable to collect the money or it would have been a different story altogether.