Bad service at vodacom repairs

I have a cell phone that is still under warrenty. Took it to canal walk repaired center and it was booked in for repairs. The only issue I had with my phone was it could not connect to wifi and the Sim card lost signal. The phone looked brand new. This all happened in February. I then was contracted and told thar they don't cover for liquid damage and that I need to pay R1500 for a replacement unit..... I escalated to the escalation department and they said there was nothing they can do. My phone was send back to the store, the technician at canal walk then advise me that he going to send the phone back to Johannesburg. I was promised a replacement device by the technician at canal walk. I think my phone went to Jb 3 times. Only to find out 2 months later that they not going to do anything with my phone. I am so disgusted in the service that was provided by vodacom.