Bajaj Finserv — false loan

Loan no: 410rep67320293
Customer id: 25243656
Emi card no: [protected]
Supplier id : 243789
Dear sir please help me to close my loan.
I have returned my product to shopkeeper because of totally defective product.
The dealer also sent confirmation mail for returned product.
Bajaj executive sandhya shah replied him that loan closed but my 8 months emi loan converted to 12 months.
(Remi to pl).
The dealer said they sent email again n again to bajajfinserve now they have no time to waste here.