Zestmoney — I want to cancelled my lone from zest money

Sir,
I want to cancelled the 3 vouchers of 25000 rs of Amazon .The order is placed by mistake.Please help me.The message is sent to me that the EMI amount of 1839 will be deducted from my account no.The loan is taken by me accedantly .Please cancelled three vouchers of 25000/_rs.When I make contact with zestmoney they told me that I raised the request of cancellations before the 30 days .So they forwarded it to the Amazon for cancellation.But They nevar give me any status of cancellation.