Poor customer care on return (lack of ownership)

I bought a pair for shoes in October (@Mall of Africa) last year, after wearing them twice they changed colour. I returned them and they told me I must washed the shoes or spilled water on them, which none of it happened. I went there twice and was told to write an email to Nicole who never bothered to reply.

The shoes are still at their shop with no phone call or a reply to my email. I now have to live with their opinion against my word on the shoes. How sad