Self — emi amount mentioned in the invoice, sbi charges more

Address:

500046

I have purchase a cell phone from you vide order no[protected] where in you have mention that sbi will charge extra from me as emi 3599.70 plus interest he is charging. When i enquired to sbi, they have memntion the it is merchant what ever they mentioned it is wrong, and we will charge the interest beside the amount, amazon is cheating? Or with sbi you do not have any agreement, simply you have fooled me.
Regards/s. Srinivas rao, [protected], [protected]@yahoo.com