Bajaj Finserv — not providing the clear information of the ecs

Address:	560043
Website:	www.bajajfinserv.in

Loan 404ecf91254134

I took the mobile using bajaj finance but i have not received any detail of the ecs like when ecs will hit the bank and from which bank (Basic information missing). They debited my account on 2nd which i was not aware and my bank account did not had the sufficient balance (Not my primary bank. They accept only nationalized bank). When i called them, their customer service is saying that i should know when ecs will hit and which bank. I feel this is completely not acceptable and would expect a proper communication