bought a phone n it gave me problems within a mont

On the 27/12/14 I bought a phone at TS Daveyton Mayfield branch. It started freezing (the whole day n night) on the 19/01/15. I took it back on the next day, they said I was gonna get it within 2weeks, meanwhile they said they were gonna update me onvyhe progress, they never did. I went to the store on the 15th day only to find out that it has not been attended to because the repairers asked for my password on the 26th off which TS never called me to get it from me. That means that the process is delayed because of that. I called their client care they said they were gonna ask the area manager (Bongani)to call me, he did and I gave him the password to give to the repairers. the only problem that I have with him too is that on the conversation he said he was gonna give me feedback on the matter before the end of business yesterday(05/06/15). He never did. I'm sitting with a situation of not having a phone and having no one who cares about my situation. I'm just left in the dark about what is happening about my phone.