hi, i am a student in australia. my friend had asked me for money but i denied the request. but later he said his card is broken and asked me to do cardless cash. so i gave him my account details and he send me a transaction of sending me 500$ but i did cardless cash of 200$ and said will send other once i get the transfer. since he transfered from a different bank so i thought i would get it by next day. but its been 3 days and havent got the transfer. i only got his name and contact num. dont know about his address but i know where he is studying. and now he doesn't answer my calls and mesage. is there i can do anything legally or get help from anyone in australia legally.?????