Vodacom poor customer service

I am so disappointed with the lack of customer service, I bought a screen protector from the Absa Towers Vodacom branch for my iPhone XS. After a month it started to bubble so I took it back to be replaced as per the warranty on the screen protector. They informed that they do not have protectors left for the iPhone XS except a more expensive one so I will need to pay in and get that one or get a refund. I opted for the refund as I do not see why I should not be ******ed to get the most expensive screen protector available. The lady then informed me that they would need to the old screen protector back, which would mean I would be without a protector until I found time to get to a shop to replace it which is not exactly easy when you work all day. I tried to explain that this would put my phone at risk, and I should not be the one at risk, after which she said they cannot take a loss due to this and they cannot assist me. I then begrudgingly purchased the expensive protector which they messed up applying and tried to give it back to me with two bubbles already in place. I then asked them to redo it and they said they have no more covers in stock. I asked to speak to the manager as I now had no options left as they wanted to protector back to complete the refund. Mary Thipenyane then came to speak to me as the manager as said she cannot take a loss to the store and that she could give me a staff discount on the screen. I asked why should pay for this cover and then go get it replaced as soon as I get to the shops for another one. Mary had zero sympathy and only cared that her store did not get impacted by a loss. I then returned the screen for a refund and now am sitting where my phone is completely unprotected and I am the one with the issue. Mary did not care when I explained that the she manages her stock and as a customer I have done nothing wrong, I even paid more in for a more expensive protector. Being a business owner myself I am horrified how little she cares about customer service or pleasing the client service and expects a customer to fit the bill for the issues. I will no longer use Vodacom in any capacity.