Mamba reloading not to be trusted

The company sells and markets locally manufactured (some seems to be manufactured specifically for them) equipment used in reloading of rifle and other cartridges. I ordered one of their products (as a set) as well as replacement parts that go with the set. When the replacement parts did not fit the original set, I raised my concern with Cassie Nienaber (the owner of Mamba Reloading) and he proceeded to lecture me on what I may and may not do with the products I bought rather than try to fix the problem of the off-spec replacement parts he supplied. He said the only way for me to get the issue of the off-spec parts sorted out was to buy a brand new set or get the brand new and never used defective parts amended by an engineering company myself at my own cost. In my experience, Cassie is rude, arrogant and completely unwilling to fix his errors. Be warned, do not buy anything from this business, and if you do, be prepared for the worst client service you have ever experienced.