poor service

Good day. On the 17th of December I visit the Vodacom shop. the Lady that help me was very helpful. I told her I want a tablet for my Grandson. we did the app and I received my Tablets. on the 24th of December he open his present and it was damaged. I went in to Vodacom on the 26/27 and show them what was wrong. Leon the manager was not available and I ask them he must phone me, he did not. I went in again. He then just said sorry policy is 7 day return and he will send it in for repairs. I reply and said this is not ok because it is a new tablet and if they gonna repair it it is secondhand. he was not helpful at all. i said to him I am a consumer and CPA say I am protected. Leon then said they work according to the Vodacom rules they have nothing to do with CPA. He promise to phone me back. he did not. this is POOR customer service. please can you assist. LOUISE MEINTJES . thank you