This is stardard reply in ISO9002 code 1.67.67. of customer
service.
ISO (Idiot Stupid Oblivious) Code : 1.67.67.
1) All promotion comes with** while stock last**
2) Always reply " Sorry out of stock" to customers to fake public
demand & popularity of promo.
3) Always to create that rush effect, first cum first served by
taking advantage of Sporean's 'Kiasu-isum'.
4) Do not attempt to help customer check stock in other location.
Try looking busy & distracted...
5) All hot-line are to wait for at least 10 mins before attending
to customer especial for promo period.
6) Always extend promo on basis "Due to overwhelming response,
popular public demand & etc"
7) Abuse media coverage as leverage for branding, threaten
competitors by creating false sense of sudden increase in market
share simply by frustrating customer, act busy, provide slack
services and if possible public rush & stampede.
..... 
welcome to Singapore where those on top always pee on those
below...