Yep, my experince with them reminds me of a childrens story,... something to do with 40 thieves. Whatever "business model" they operate, if you deal with them, they will eventually rip you off, especially kids, grandmothers, wives etc .
Be very cautious when dealing with Cajees Cycle Corner in Fourways. They told me that they not a swop shop and refused to either change it or give back my tire because I did not have the "paperwork".