Vodacom. Repairs and Waranty

Samsung J7 Pro was bought on contract in December 2017 just before Christmas. 2 months ago it doesn’t want to charge. So what it does is it looks like the cable doesn’t make good connection. Used different cables and charger same problem. Took it to vodaworld for waranty. They come back to me with liquid damage. The phone was never near water or does it have even a scratch on it. So booked it in again to appeal their water claim. Come back with same story. Vodacom is the worst. Can’t believe this is the way they treat their customers.