Lg g6

I bought a lg g6 in March 2018 from Vodacom not even 4 months I am aldready having problems with the phone it says moisture has been detected and I cant charge the phone, I feel like this is ******* from vodacom because I actually wanted to purchase an iphone 6 but the salesman convinced me to purchase the lg g6 as he said the store did not have iphones.My work depends on me using a phone and with this problem I am losing. I will never trust a LG device my intention was to upgrade to the LG v30 but I dont think I can afford the risk