State Bank Of India [SBI] — deduct money from my account without any reason

Address: Kolkata, West Bengal, 700005

Dear sir/mam,
My name is rajib lochan banerjee i have a savings account no-[protected]. When i check my account balance i am shocked. Sbi deduct money from my account like this way...
23/10/17 rs-295/-
23/10/17 rs-295/-
24/10/17 rs-295/-
24/10/17 rs-295/-
24/10/17 rs-295/- total 5 times deduct on 23rd & 24th oct'17. So i visit my home branch they told me that its a bounce charge for my bajaj finserv ecs return, but bajaj finserv already clear on 23/10/17, so why the bounce charge deduct? They do not clarify the reason, so i request please refund my money from sbi.