Bad Advertising

On Monday evening, one of my friends had informed me of a special that Telkom was running with their Telkom Mifi routers whereby a customer would receive 5GB of data and the router for R99. I acknowledge that it said that it was for the first 1000 customers only, however the online system still accepted both mine and my wife's order and we included banking details and all the required information. Today, a gentleman calls me stating that the promotion is over. Then why is it that the online system still accepted our order and didn't pop up with any warning of any sort? I am extremely furious about this and I am awaiting a response from a well known newspaper to publish this and expose Telkom for their ********** advertising and error prone systems that they endorse.