Bad attitude and can't exchange

I was not happy with the phone I got as a gift so I wanted to put more money with the exchange for a better phone but their service was very weak. While talking to the person he actually shushes us to hear what the other person who helped us first, is mumbling. They don't even communicate properly, we asked the person who helped us first if we can't exchange because we looked everywhere for a phone case and vodacom said the phone is out dated, they don't even sell the phone any more. so who wants a phone like that? they could have told us from the beginning that they can't exchange the phone, so we went through all that hassle and disappointment that we can't exchange the phone for a better phone. their phones on display don't even work so how are we supposed to know what phones are worth buying and which ones are not. So I am still not happy with their service I wish I could just get a better phone, I am willing to pay the extra amount in. And I don't think I will ever support them again!