Vodacom still not take responsibility

Yet again i am disappointed, my phone was sent in for the third time to Vodacom for repairs. The phone received back by the branch and still the problems exists after thew branch has tested. this is obviously a manufacturing fault on the Samsung Galaxy A3 units. But I, as the customer have been sitting without a phone now going on Three month because i still don't have my phone back in working condition. Why do these Big company not listen to the people that are actually contribution to their existence. I need a new phone and reimbur*****t for the inconvenience and expenses i have endured because of this problem. This device has been couriered back and forth between Cape Town and Johannesburg now multiple times who is to say no further damages has been caused because of this. Replace my phone with a new one!!!!