Bajaj Finance — emi for washing machine & extension of warranty of services

Address:

Mumbai City, Maharashtra, 400097

When i visited to shop. They said to me that whatever we took a loan is without interest and emi would be 1700/- for washing machine and for extension 238/-. Total emi will be 1938 which was deducted in month of march 2018. Yesterday i got messaged from bajaj finance wherein they mentioned that emi of rs.2112/- is payable for april 2018 i. E.2nd april 2018. May i know why this we pay more emi than said emi