Corporation Bank — extra balance withdrawal

Address:

Muzaffarnagar, Uttar Pradesh, 247775

Respected sir/ma'am
This is regarding extra amount of 10000 deducted from my saving account on 15 may 2018.
Acctually i did one withdrawal of 500 on 15 may 2018 but in my bank passbook it's is showing extra 10000 amount withdrawal.
Bank manager is not supporting well and showing again and again cctv footage and saying that the person who was behind you took up your money from atm but it's not clear in cctv.
Again they are saying that second transaction happened after 18 minutes but we both person finish our transactions less than 10 minute.
Manager is saying nothing will happen do whatever you want to do... Please help
Please help me.
Ifsc code-corp0001338
Account no-[protected]
Mobile no - [protected]