Poor customer service

I bought a phone from Sportscene Middestad Mall. ( Hi Online). the phone i bought was the last one in there display. The box was not sealed when I received the phone as this was the last one the had. 3 Weeks later the phone went completely dead. I returned it to the store where I was told that they had a 7 day out of box policy. I was willing to take a refund on that phone and buy another one, but they gave me a loan phone after a huge fight and a call to the regional manager. I had to phone them to track the process of the repair of my phone. When I phoned on Monday the 28/08/2017 I got told that Vodacom has fixed my phone and it is on the way to the store. They must have used snail mail because by Thursday 31/07/2017 my phone was returned to the store. I then received a phone call telling me that the phone was not fixed due to water damage. This is extremely strange as the phone was never near any liquids. I then phoned Their head office that logged a complaint and would have phoned me back. I had to phone them later the afternoon to find out when they are going to call me back. I got told no complaint was logged. I then had to explain the problem again. I wanted to speak a manager but they were all in meetings. Great customer service. The person I spoke to gave me the operations managers number. This was at 16:00. After 3 calls which i only got voice mail, I gave up. All I want is a refund or alternatively the exact phone that I purchased. I have had phones for 22 years and have never had a water damaged phone. I ran a 27km race with my Iphone 5 on a day that was 39 degrees in Paarl. That phone was sold with no problems. I expect to be contacted.