HDFC Bank — personal details shared without my knowledge

Address:

Tiruchirappalli tiruverumbur branch, 620019

I am customer of your bank since january 2019 i am writing mail as i feel very dissatification for the employee who abide the customer right policy. I suspect one your employee has shared my personal details to someone else without my knowledge which is against the customer right policy. Yesterday i had faced a problem which irritated me the most, a person named karthikeyan working as from equitats small finance bank contacted me through my personal number and provided me with complete details of mine which includes my account details, pan, aadhaar number and also my address (Which is not yet linked to any of bank account or anywhere as i have change it very recently).
I would like to close my account as i don’t feel safe and secure. Kindly look into this and i need a clear explanation and the reason why the person has shared my details without my knowledge immediately as it affect my personal very badly.