Disappointed worst service ever

I ordered a phone on Vodacom online I received it on the 14th pf December on 17th December it just stopped working and does not want to charge the sad part is we were on our way to Namibia. I was stuck with a phone that only worked for 3 days. With me being in Namibia the best I could do is send a email and report the citation. I also send my parents who was still in SA to go and explain the citation as well in Vodacom in store they saif if I am back in SA I can just bring in the phone. I did not receive any feedback from the email I send on the 17th of Dec. I went to Vodacom on the 3rd when I was back in SA and then they said they can't help me because the online and in store is two separate departments the only thing I can do is call the customer service with no attempt to even try helping me in store. I phoned after a long conversation and trying to explain the citation the lady said I can email the manager the proof that I send the email so that they can replace my phone. I emailed the manager 3 times already and no response I have been phoning the call center and have been talking with every department possible this is a big DISAPPOINTMENT as I don't receive any response and I am the one paying for a service I don't receive and for a brand new phone that is not working and loosing all the DATA Airtime.