Truworths is luring us to come buy with the false promise of non existent discount vouchers

I get sent SMSes with discount voucher numbers, however when i get to the Protea Glen store the staff is unable to apply these discounts for me due to the vouchers not being on the system. So Truworths is running a **** to lure to come buy with the false promise of discounts should i buy from a certain threshold? When i call the customer service i am told that 'if the system is not updated with the voucher sent to me, then there is nothing the head office can do' WOW :) I am going to take this further than Hellopeter. You have no shame.