Very poor customer service

On 26/09/2015 my husband purchased a samsung trend neo for my birthday at foschini mall of the north, after using the phone for less then a week it started to give problems. We went back to the shop and they took it in for 'repairs',making promises to contact me within 2 weeks (never got the call) upon receiving the phone back suddenly there are scratches on the phone and cracked on the top left corner.Mojalefa and his manager took it back again for 'repairs' (again no call from the store after 2 weeks) got the phone back and still having the same problem. And so we went to the store again,being assured by the store manager that they will not give me a faulty phone she asked that we give it back. My husband even said he would rather buy the samsung j1 which was even more expensive at the time but the manager insisted that they will assist us and the phone would be fixed. So this is now the 3rd month I'm still without a phone and no call from anyone. I'm totally disgusted by this poor customer service???