State Bank Of India [SBI] — False deduction of amount from my saving account to my car loan account

Address: Indore, Madhya Pradesh, 452012

Dear
I had taken a loan amount rs 4, 65000/- fro sbi as a car loan and as per terms and conditions it is decided that loan will be deducted from sbi saving account in 84 installment of rs. 7600/- per month, instead of this sbi cheated me and deducted rs 78000/- in april and after complaining about this sbi officers ask me to written an application for this fault done by them, that time i wrote a complaint and rs.76000/- credited in my saving account,
Now on may, 06, 2017 they done same mistake and deducted rs.53000/- from my saving account and credited in my loan account first time i thought this is the genuine mistake but this happened again, so what is this mistake, negligence or cheating