Bajaj Finserv — EMI Deducted twice and Mandate Fail charge also

Yesterday on 1 April I paid advance emi of rs. 1334 for the month of April. Got the message that it will be processed in 1 business day.
Today on 2nd April, same amount of rs.1334 deducted again from my bank account for emi. And after a few minutes an amount of rs. 295 deducted for mandate fail?
Although I have enough balance in my bank account.
I request Bajaj to refund my emi and mandate fail amount. And if your system automatically deduct money from bank account on certain date no matter what, than what's the point of advance emi option in your app.