Capital First — Unauthorized amount deducted prior to pre emi date

I have 3 loans with capital first bank out of which 2 are scheduled to start on 2nd july 2020. 1 loan is already running and it's 3 emi are paid. The last emi deduction happened 2nd june 2020 of amount rs. 1193. Now on 10th june i have a rs. 476 deduction from my account which i don't understand. While getting in touch with capital first representative they said they didn't charge it but i can see the deduction happened from ecs of idfc capital first and i also confirmed with bank. They also said its from capital first but this guys deny the charges. I want my money back or a solution with upcoming emis.

Idfc no. C[protected]
Name: md sarfaraz hussain
Email : [protected]@gmail.com