Bajaj Finserv — Illegal interest rate on fees and charges and loan amount

I had purchased a loan of INR 584999 from Bajaj Finserv and they sent 567549 only in my account dated 27 July 2021 and I transferred back all the money to their digital application portal via net banking dated 30July 2021. Now They charged me Rs 743 as a interest for these 3 days and for remaining RS 17450 they are charging interest 234 i.e. 977 rs total as emi upto date 02 september 2021 and previously their agent told me that I have to give interest of Rs 80 only for this fees and charges. and their emi will be included only for interest rate not for principal amount. They are making fraud in the name of EMI. Please explain what is emi if interest is not included

Their agents numbers are :
[protected]
[protected]