Complaint Samsung S 3 Mini

First number was Ref : CS- ***<br> Second was Ref : ***...<br> Samsung in Century City have my galaxy S3 mini for 2 weeks in total , the very 1st time i took my phone in for repairs they returned the phone to me in the very same condition i gave to them , they did absolutely nothing to fix the problem , i then took my phone in the 2nd time as the problem was not resolved , Second time i spoke to manager by name of liezl... i was then told i will be contacted within '5 working days' they have had my phone for 2 weeks now. I then went to the store to collect my phone as iv still not heard from them when i was told that my phone was declined due to water damage which i feel could not have been possible as my phone was never in contact with water , i demanded to see the problem as proof and waited for 30 min for the phone then i was told that they cant find my phone and they will call me when they found my phone , Did they loose the phone ? .as to date i have still not heard from Samsung . They told me they would sort it out and contact me within 24 hours, its been 3 days and I've heard nothing. I'm fuming, it cost money to drive up and down and i need to pay my contract