False Advertising

I joined the Samsung Black Friday early email notification and was mailed that I could buy the products on Thursday 23 Nov at 12 pm. When I arrived at the Menlyn store at around 11:15 am I was told that they do not have stock of the item (a Galaxy Tab A 10.1) I wanted and should try the Mobile store. So they never even had the stock to begin with! The mobile store had stock but wouldn't sell it to me as they were unaware of the early start and told me I should come back at 6pm - even after I showed them the email. Another customer also arrived with the same email and they just told him the same.

This is not on. I tried the online chat service and the operator (Letisha.P) just basically told me to try another store.

Please respond asap.