State Bank Of India [SBI] — Money got deducted when I didnt use my debit card.

Dear SBI customer, your transaction at POS 99999999 has been declined due to insufficient fund in your account.

Dear SBI customer, your transaction at POS PU003639 has been declined due to insufficient fund in your account.

Dear SBI customer, your transaction at POS 99999999 has been declined due to insufficient fund in your account.

And 10+ same messages repeatedly and why my money got deducted automatically for 20 times almost Rs.500 Got deducted