Dishonest advertising by Dis-Chem

Spectrum Multivitamin Senior 300 tabs, has been advertised on a special for the past few weeks but has not been in stock at Hillcrest or Waterfall. When I asked the manager for a slip to give me the special price when the product finally arrived, I was told she couldn't do that as they'd never had it stock! This is dishonest advertising by Dis-Chem and does not bode well for their dishonest trading practices.