No Stock

It is now two months that I am trying to obtain a contract for a Samsung S7 tablet. Every month it is advertised in the MTN Yello Trader and everytime you call a MTN branch they never have stock. Why do you send out the advert if you do not have stock? I am phoning the local MTN store in Bothaville frequently for any news on stock levels and they also request stock levels from other MTN stores but there are never stock. Can MTN please take all the adverts for tablets out of the Yello trader since you do not have any stock.