Poorest customer service I ever had

I was looking for a long time on the internet to find a pair of Aquacat boots, because I already have a pair of the same brand and after nearly ten years, I needed a new pair. I did not find the boots anywhere in Europe. Then, I found the boots on that website.
I ordered a pair of the Aquacat riding boots. I wore them for only some weeks. After the short time, the inner of the tongues of the boots lost their colour and the leather was broken. I was very disappointed of the quality of the shoes and because my old pair lasted for so many years, I thought there could be a manufacturing problem.
So I wrote an e-mail including photos to show the problem. I received an answer that I had to forward my photos to the return service. I mailed the photos again and had no answer for some days. After I mailed again, I received a message.
They said that after seeing my photos, they saw no problem but only "normal tear and wear" which was for them not exceptional after that time.
I answered again that for me a boot of that price range (60 GBP) should not be in such a condition after that short time of wearing. I had no answer in return.

Until now, I always had good experience in customer service on shopping sites, but for this time I am very very disappointed because I had the impression that they did not even try to solve the problem.