Bajaj Finance — Loan amount

Maine 2018 Maine Bajaj finance se ek personal loan Liya Tha 5lacs ka for 5 year means 60 months my EMI is 13817rs per month now i have paid 6lacs 63 thousand 2 hundred 16 Rs. if i asked them how much amount rest is, they told me 3 lacs you need to pay. in logo ne 60-month ke 68-month kar diye pata nahi kaise, meri sirf 2 emi pending hai but ye Baki ke extra month kaha se lag gaye. Please help me in this case.