Misleading online information

Hi, i have a problem.. There's an add on Facebook the one that allows one to click on it and purchase for a blazer (SKU:***) it says it's R150, but when you purchase it's R249.. This has been going on for a while.. Ive been waiting this blazer since forever and I don't think it should be my problem. Its written R150 I think I have the right to purchase it with a R150. I have screen shots to back this up.