Dis-Chem's new business model

My wife is a staunch supporter of Dis-Chem - for good reasons. However, gauging from her payment frustrations wrt wrongly-priced goods (for at least the last two years), it struck me that perhaps it is not a `feet on the floor' training or implementation problem. Perhaps its Dis-Chem's new business model. Without fail EVERY TIME my wife visits the store, prices will be wrong with check-out. To sort this out with cashiers moving at snail's pace (oblivious to keys and productivity) is draining. Customers have no idea what they really pay. She is one of those frugal few that does. Such a pity that management only talks about this issue - there is no sign that it is actually changing. A sign of the times.