SONY XPERIA Z3

I have logged a complaint regarding phone that is not working properly. it has been 3 weeks now and still I have not received any feedback for Sony or Vodacom.<br> I keep sending e- mails - no response.<br> Vodacom keeps on asking for job numbers - i have sent it 3 times now.<br> When i request contact details - no one responses for everyone's e-mails has no contact telephone numbers on.<br> This is getting really frustrating.<br> Vodacom repairs centre - very poor service<br> Sony - very poor service.