Bad customer service

My name is Thobile Langa. On the 7th October I did an phone upgrade with vodacom for me and my wife but vodacom upgraded my daughter's number. Then I notified vodacom and was I asked to return both phones which I did and I was told wait certain period which I did. When I called I was told that I can a new contract. But I when I went to their shops I was taken from post to puller by their agent s and promises were made to fix that and their management are avoiding my calls. Currently I'm left without phone yet I'm being billed. Vodacom customer service this days stinks.