DATE CHANGED ON SPECIAL

I am extremely disappointed in Hi Fi corporation!!! Saw an awesome special on their website for the Sansui 600 l Side by side fridge freezer for only R6999. The advert specifically said the special is on till the 31st of December 2020 so I got all excited and started saving for it as we need a new fridge SO badly and they are really pricey. I will only have enough money sometime at the end of November/ in the beginning of December. So anyway I've been checking the ad everyday for the last few days just to make sure on stock etc just for me to see that now all of a sudden the special is ending on the 22nd of November! That's so messed up! How can you just change the special date like that?? When you know people check the dates etc and plan to budget for it.