Worst customer service ever

My S4 broke last year end of Nvember and was booked in for a reboot problem. The phone was returned twice and had to be booked in again because they did not fix it properly. They did a screen repair even though my sceen was nt broken. Nw that my screen is broken I discovered that they also did a liquid rpair at the time. I complained to the customer cae department at the time, posted on Hello Peter twice and nothing came of it. Now when I tried to get assistance from them they tell me the quote stands because the phone was booked in for a screen repair. They even emailed all the documents to me and no where does it state the screen was broken. I spoke to Colleen at the time who now says she can't remember the conversation and was very rude to me on the phone. Verna did try and assist me but according to her management saysthe quote will stand because I have no proof. Even though the documents clearly show the phone was not booed in for a screen repair. I would like someone to assist me who is NOT from Vodacom Tygervalley as they are utterly useless when it comes to customer service.