extremely unhappy customer

I ordered a case from Hey Casey and when I received it I was very disappointed and unhappy. The colours of the picture of the case I ordered were vastly different to what I received and pixelated, it actually looks ugly. That in itself is the responsiblity of the company to make sure what is printed is reflected on their website. I received a free case as well which was fine and you can see the huge difference in print and colour quality between them both. I sent them clear photos and they rep**** to say they don't see anything wrong so I don't qualify for a free replacement. Just like that. And if I want to I can send it back to them (at my own cost) to evaluate. I rep**** to them and sent them screenshots of what was advertised and what I received and didn't receive any reply at all. Firstly, they have a very unhappy returning customer, as I have ordered from them before, so this definitely sours my experience with them going forward. I have sent them proof of the difference in the colours. It's very plain to see and they don't even bother to respond. It really bothers me that they are happy to leave a customer VERY unhappy. The money I spent was a complete waste as I'm sitting with an ugly phone case I don't want to use. If this is how they are going to leave it I definitely won't be using Hey Casey again if this is how they treat their customers.