Shriram City — bike loan

Address:

107, N Usman Rd, Postal Colony, T Nagar, Chennai, Tamil Nadu 600017, 600017

I have taken a loan for my bike they have given a emi structure of rupees 3663/- for 11months but they are deducting rupess 3700 every month i had raised a complaint to them but they are refusing to repay the additional money which they have taken how they can steal their customer money like this,
my contact number [removed] Loan Number TNGATW[protected]