Expensive shoe's not quality

I bought about 4 pairs of Tsonga shoe's and use to love it. My 1 pair (real leather) are busy fallen apart on the heal part, I dont wear them a lot and are really dissapointed in the quality of the shoe, none of my other Tsonga did that before. I send it to the Customer care but she just send me a list of reasons that shoe heals will do that. I am not happy with her answer, and I will not recommend them, there is no after service from their side. This shoe was not cheap at all. It was very expensive.