Redmi — Already paid amount but asking for money through emi

Sir i have purchased my phone redmi note 8 pro on 19 january 2020 through amazon with no cost emi getting 10% less of through sbi card benefit. And amount payable was 12100 but it's now 7 months getting over and the price u have taken from us is more than 12000 and still it's asking to pay in next month even of amount 2104. Pls contact me