State Bank Of India [SBI] — short amount received from atm on 04/04/2017

Address: Gurgaon, Haryana

I have savings bank account in sbi sector-15, gurgaon (Haryana) branch.
I opted to withdraw rs twenty thousands on 04 april 2017 through sbi atm but received rs nine thousands only.
Atm id-bhbf01565132 shop no-4626 sadar bazar gurgaon
Trnasaction no-date and time-7392 on 04/04/2017 at 7.32 am
Amount opted - rs twenty thousands only
Amount received-rs nine thousands only
S. B. Account no-[protected]
I complained this matter to my home branch with branch head same day at 10. Am,
I received a complaint no-[protected] on 06/04/2017.
I sent a mail to gm. [protected]@sbi.co.in on 04/04/2017 at 5.21 pm
I sent mail on 20 april 2017 at 1.33pm to dgm. Customer @sbi.co.in at 1.33 pm
I received a mail on 20/04/2017 at 5, 34 who mentioned to have forwarded this matter to concerned department.
I have complained to sbi mehrauli road branch and lodged my complaint.
I went again to my branch and gave an application to resolve the matter asking for cctv footage.
Sir till date nothing postive has happenned.
Please get my issue sorted out i want my short amount of rs eleven thousand back in my account,
Regards,
'dushyant khatana,
M-[protected]