Lies and more lies- False advertising.

I purchased an item on the website yesterday along with a few other items. I was suprised when i saw a 99% markdown but the product purchase was successfull with everything else i bought. To my suprise this morning my item is cancelled due to no stock. Now the shocking part is i went back and the same item was now marked down by 25% but they telling me there is no stock. i am well within my Consumer rights and will be taking this to the National Consumer commision for further investigation i will also be taking this to all social medial platforms. I want my item for the price i paid. You guys need to deal with your staff internally not with me. I want this matter resolved.