Cellphone query - Woolworths Maponya Mall and Head office customer service

I logged a complain at Woolworths store in Maponya regarding a cellphone which I bought from the store and got damaged within a 7 days period. I questioned the quality of the product and I explained that its unfair that I must pay full price for a product that never benefited the product user (my daughter). I logged a complaint on the 10th of July 2017 and have escalated the query from the store to head office customer service. Today is the 17th of October but I have not heard a word from Woolworths. These are the people I have been dealing with:

Melissa Eksteen - customer service at head office. Izzart Ismail - customer service at head office Lufentse - store manager Phephi - floor manager

May you kindly intervene. I do not agree with this kind of service, not expected at all from Woolworths. Nobody bothers to contact or keep me updated. Both store management and head office have failed at resolving my query. I smell incompetence. The last time I escalated this matter was through Melissa, who was going to get the regional manager responsible for Maponya branch to deal with the matter. Nothing happened.