Fraud transaction Complaint

I am putting this plea against the fraud happened to me. This is regarding the fraud transaction has been taken place in my account.
I have salaried account in ICICI Bank from the last 3 months. On 22nd,May I got a Fraud call from ICICI Bank, Mumbai stating that my account has been deactivated because of lack of KYC. So to activate your account kindly provide the required information. So unknowingly I provide them the information related to my account. During the conversation with the ICICI Representative( Fraud person), two transactions took place through my account using the internet banking.They told me that the same will be reflected when my account is activated but by the end I came to know that its a fraud call.
I don’t know how the fraud people got my phone number and my account details. How do they came to know that I Have an account with ICICI Bank. In my knowledge since the account has been recently opened, I haven’t shared my account number with anyone. So there must be some security breach in ICICI Bank.
I have account in ICICI BANK, Industrial Area, Phase 7, Mohali-160055,Punjab.
So I want to file complaint against the Branch Manager of the Mohali Branch and the Branch Manager of Mumbai Corporate office.
Mohali Branch: ICICI BANK, Industrial Area, Phase 7, Mohali-160055,Punjab. IFCS Code: ICIC0003421
Phone: 9780038152
Mumbai Corporate Office: ICICI Bank Tower Ground Floor, Bandra Kurla Complex-Bandra East, Mumbai – 400051 Phone: 9021667777,+(91)-22-33667777, 44455000, 26531414
Fraud Transaction details
1. Amount withdrawn: Rs. 99,000 Ref No: 000772092792
2. Amount withdrawn: Rs. 24,300 Ref No: 000772103052

Complainant Details:
Name: Sunny Bhatnagar
emailid: [email protected]
Mobile no: 9815656619
H.No: 3140/1 Sector 46/C Chandigarh-160047

Fraud ICICI Representative details:
Name: Sagar Kulkarni
Phone No: 08434853096