Marking down items thats apparently not available

Iv always been a happy takealot customer. However they are marking things down yet don't have stock.. The next day it will be advertised at it's normal price and stock will be available.. Iv been following this trend everyday for weeks as I have the johnny walker Song of fire barcode *** in my wish list for months and every morning check too see if it's marked down... When it does get marked down it same time gets advertised as out of stock same story with the song of Ice version.. Today 16th February its marked down 43% yet out of stock yesterday it was R759 and readily available... I think this guy's are ******** us or is it not ******* to advertise something you not planning on drilling or have available.. Please advise