A very popular mall in my country (Philippines) is well-known (notorious?) for employing most of its employees as contractuals only. Thus every five months or so, it changes its staff to get another batch. Simply put, the family that owns the mall chain saves a lot from non-regularization of its staff (from not granting regular salary, benefits, etc.) because they are kicked out even before they could reach the number of months of service wherein the labor code stipulates that they automatically become regular staff of any company.
But I noticed that, sadly, because this mall chain changes often its staff, it seems to have fallen back on educating its salespersons and cashiers on customer service. I've witnessed at least three instances in the grocery section of of two of its mall branches of how the cashiers did not now how to politely treat the customers. And these cashiers did not, or refused to, say the magic word "Sorry" even if just to appease the complaining customer. And, then, after the customer had left, the cashiers had the gall to loudly talk to their fellow cashiers or the baggers in their lane about the irate customer. Even if customers may be on the fault sometimes (too demanding, don't know what to do, etc.), still it lies on a mall's salespersons, cashiers, baggers, etc. (in short, a store's frontliners) to be the more understanding AND HUMBLE part of the exchange. The customers are, after all, the lifeblood of the malling business and, for that matter, the lifeblood of the mall staff's job.
It's sad that in the name of gaining more profits for mall owners through contractualization of their staff, they have seemingly done away with training the staff on good customer relations.