ICICI Bank — posdec charges upto 1000 rs and still charging

Address:

Bhagwati Kunj S.L. Road, Room No 4, Mumbai City, Maharashtra, 400081

From 5th of december till now the icici bank is uncessarily charging me 29.50 rs, they have charged me upto 1000 rs in 5 days, i dont understand i have not used my debit card even i was having balance in my account still they have charged me this,
It is kind of fraud done by icici bank to theit customers.