worst service

I'm doing bathroom renovations and I spent - +R50 000.00 at Tile Africa to be told to use the bucket sytem. when I went to return the wrong flushing system, I was told they can not help me cos they don't know what system I bought. I gave them the receipts and still they did not know what they sold me, instead the manager told me he cannot help me cos he does not have enough staff to go with me and see what they sold me and the rep does not work on weekends. I stayed the whole weekend without a toilet and no one even bothered to contact me on monday morning.