Bandhan Bank — I want an investigation about fake account

Address:

Jamtara, Jharkhand, 815354

Sir, i am samir kumar nandi,
Someone open a join bank account in my name. I am not signed any document of bank, the signature in bank account is totally fake. I want to know without my concern how anyone open an account.
When i contact with branch mannager he given me a from to close that account, & i siggned it. He also take my aadhar card xerox on that day (04/08/2017).
I want to know how all are responsible to open this fake account & how come bank is not be able to found the fake signature.
My account detail is given below, also i attach all the details which will prove my identity as samir nandi.
My contact no : [protected], [protected]
Email : (Rajesh. [protected]@gmail.com)

Ifsc code of the branch is : bdbl0001125
Account no: [protected]