I WANT MY PHONE BACK

In August i sent my phone for repairs at the samsung store in somerset mall and payed + R2041, it came back October two days after i discovered that it was still faulty , i then took it back for re- repairs till today i still havent recieved my phone nor a positive feedback about it, i hello peter and samung called me back and confirmed they will look into the matter, i have to phone them everytime to get a feedback , 3 weeks back they requested for my proof of payment which was ridiculous because they should be having all details in their computers, neverthe less i did send proof of payment which i had to pay for but still nothing is done, Samsung this is ridiculous its been 5 months now with out my phone i want it back.