SBI - ATM — LOSS OF MONEY

I GOGADA chandra mouli having acount ..........i gone to parrys sbi atm in chennaito collect rs 500on m[protected].but i was unable to withdraw( the slip shows -sorry unable to prosses) same day i gone to sbh atm and take mine state ment it swhowing already 500 withdrawn from same acount.after that i wthdraw only 500 rs from the same atm but it showing total on that day[protected] rs as total withdarwals but actual amount is only is 500/- i an my parnet barnch send a requst leter to sbi chenni branch manager till the date i did not get any confermachion from chenni branch so plz pross my requst as early as possible.........