Pathetic, putrid and disappointing service

I write this complain with utter disgust and a loss of patience. I turned in a Samsung s5 for repair on the 20-02-15 and was told I would receive it within 21 working days. I was also told that I would receive sms notifications regarding my phone which I haven't received. Untill today being the 17-05-2015 I haven't yet received my phone despite going in store enquiring the progress about 5 times. I have sent emails to the manager who doesn't respond and gives false promises. Furthermore, the phone is on contract which I am currently paying but cannot utilise the service. In store, the manager passed me on and on to people in Pretoria and so fourth but yet I haven't received the phone. At one stage, they seemed to have lost the phone as they could not track it on their system. I was told about 10 days ago the phone was dispatched and on the way to Bloem but yet I haven't received the phone or any notifications. Furthermore, the phone line at the store doesn't get answered, and when it did , the relevant personel didn't seem to know anything regarding the phone or its status. This is not the first time but third time since July 2014 that the phone has was sent in. Its 3 months later