Deposit money

Good day I have a problem, I've been renting a bachelor apartment in Pretoria Brooklyn, i signed a contract..The contract never stated that i should serve a notice, on my own understanding that means i could leave anytime i want,i wanted to leave so i served a month..The owner said the contract says i should serve two months notice,i gave her my contract which was different from hers..The agent who is working for her edited her contract by pen..i moved end of June if im not mistaken.They refuse to give me back my money. The owner says she doesn't care i must talk to the agent,she refuses with his contact number Ive been talking with this guy only via èmail All i know is he goes by LES on Gumtree...i need your help please assist me i need my money back