SBI — About account opening

Address:

Virudhunagar, Tamil Nadu

Sir i m vijayakumar have account in sbi. Recently went to iob ifsc code IOBA0001942.There one of the staff said as per rule a person eligible for only one account in any bank not eligible to open another account and said aadhar no link with bank account is must. Please clarify these things .on that bank staffs are not convey write things to client and treat the customer brutaly.please take action onthis.