State Bank Of India [SBI] — mismatch in interest certificate total amount and total emi pais

Address: 411037

Website: bankcontact.in/sbi/12926.html

I have max gain home loan account in sbi. Loan account number : [protected]
I generated "provisional home loan interest certificate" online for financial year[protected].
It shows details as :
Actual repayment : 01/04/17 to /04/17 : 25500
Expected repayment : 01/05/17 to 31/03/18 : 312081
Total : 337581
Of which, principal : 66967
Interest : 270614
My emi is 40000 per month. Which mean i paid total 4, 80, 000.
Where goes remaining : 142419?