Vodacom4u unprofessional and bad service delivery. Iphone XS Max

So disappointed with Vodacom and Vodacom4u Woodlands service. My Iphone XS Max was working and it went flat and didnt want to charge. My husband took the phone to Vodacom4u Woodlands and they phoned us two and a half weeks later stating that my phone is water damaged so because of that I lost my warranty on the phone. We told them that on the Apple site it states that the phone is water resistant for up to 30min and 4meters deep. They said I should email Vodacom Escalations for more help so I emailed Vodacom Escalations. After that Maryka from Vodacom 4 u Woodlands phoned to ask why I havent give feedback regarding the first Quotation. I told her that I did phone the shop when they send me an sms to phone them regarding the Quote and they told me that I must email Vodacom Escalations. She wasnt aware of that so I had to forward all the emails to her. She said that the Iphone XS Max is NOT water resistant as far as she knows and that I must keep them in the loop of all emails amd communications which was very unprofessional because we took the phone to her shop and she send the phone away so they must actually know whats for what at all times. So another email came through stating now that my phone is indeed not Water damaged but Liquod damaged and said I must phone Apple if I needed more information. I phoned Apple and the guy there told me that liquid damaged is caused by personal damage like when the phone falls or something. I told him that the phone havent fell and is as good as knew and he just said it is what it is. I then email the vodacom guy back and asked him to please help me because the phone is still under warranty and nothing happened to the phone, I was using it and suddenly it didnt charge amd couldnt start and he just never came back to me. After a week has past Maryka from Vodacom 4 u phoned me and told me that tgey have semd the phone back to the shop because I didnt answer on the Quote but I did respond. I then told her that Im really unhappy with the service I have received and the unprofessional manner this matter has been handled she then said that she will help me sort it out and to speak to the right people but she still said the phone is not water resistant and I told her that on the Apple site its shows that the phone is but she said no and that they dont see any reps for Iphone and thus she is still keeping by her statement that the phone is not water resistant.,but three weeks has past and each and every time I had to ask her what is going on... Absolutely no communication from her side. Every time another excuse as I asked her. In this week I asked her again what now and she said the phone is now Corrosion damaged and that is why my warranty is void but Vodacom will phone me, 3days has past now and still nothing... Maryke said that I had to go to Hello Peter and not mention their shop but every stage of this problem has been handled so poorly and unprofessional. I would like this matter to be sorted as soon as possible and of there is someone that could help me directly as I need the phone and obviously its a manufacturing fault. Please if someone else can assist me?