ATM EXTRACTED MONEY- NO REF. FROM BANK SINCE QUIRY

Good Afternoon, Its very sad and disappointing, when typing this complaint. Last week Thursday the 6 of august, at about 4:30pm I went into the ATM at Our Local Phokeng Mall, in Rustenburg. I withdrew money R1000.00 but to MY shock and dismay the money that came out was only 700, meaning 300 short,AND IMMEDIATELY THE SCREAN READ DISPLAYED THAT MY MONEY HAS BEEN EXTRACTED, WHAT IS THAT SUPPOSED TO MEAN, I WITHDRAW MONEY AND I GET SILLY MESSAGES THAT MY MONEY IS EXTRACTED,BY WHO AND WHY COZ the balance remained the same. The main reason to write a complaint is to demand my 300 rand back from standard bank. I was supposed to use that money last week at home due to family responsibilities but your bank failed me. The following day I went to Barongwa Branch about the same query, The gentleman just wrote in a piece of paper and told me that things like that happens at the atm, he wanted the ATM NO. hOW AM i SUPPOSED TO KNOW THE ATM NO. IM NOT WORKING IN THE BANK? THE PERSON WHOSE SUPPOSED TO HELP ME ASKING ME SILLY QUESTIONS. HE TOLD ME ill get an sms and reference number, i haven't got anything that was just an excuse to get rid of me.PLEASE HELP I want my money refunded today!!!