WOOLWORTHS ONLINE NO STOCK ONCE AGAIN!!!!

Hi, <br> i recently purchased goods online from woolworths. When i added the items to my cart it was in stock. There was a special whereby you buy 3 and pay for 2. So i decided to get 3 items to qualify for the discount. A day later i get a call to say that 1 item is out of stock with no substitute available. And another is out of stock with a substitute. The problem is that i will not be receiving 2 items and the 3rd has been removed. I am still paying the same amount but i now lose out on my 3rd item. This is absolutely unacceptably as i only chose 3 items due to the discount, and now i am paying in full for less. Please fix this issue. My order number is o***