Standard Bank Share Trading - I lost 495% on my share because I used you !

This is a trade I put through on standard bank securities ( online share trading ) for the day :- 305 shares @ R27.11 ******************************* 1 share got bought I received an e-mail stating the following : - cost including all fees R161,35 ( this for share worth R27,11) Upon enquiry , I get an arrogant response to the effect of this is not in their control however they would do me a favour and waive the fees if I bought the rest of the shares in the next few days - but hold on , this generous show of "goodwill" will never be repeated again. Surely this is just nonsense ! Given how programs can we written / limits set etc . there are algorithms to decide when and how to carry out these trades so we don’t end up with non-sensible trades like this. A "mature" trading platform like standank bank should not be doing this its traders