Priced R1400 but could not buy because system prob

I tried two days Monday and Tuesday morning about 6h30 in a row to buy a Russel Hobbs mist fan online from Dion Wired with marked price R1400 - R1600 was crossed out, so I take it was a promotion. But there online payment system just told me the whole time submitting order information, but never wanted to take me to the place where I can pay and yesterday I wanted to try again and still the same, but in the mean time the price went back to R1600. I then phoned them and they told me they can't give it to for that price unless I can give prove, who would know that the price would be different the next day. I then mailed them the following.<br> Good day<br> I've being trying two days now to buy this item but when I get to the place where it tell me to finalise my payment and tell me to place the order it give me this screen, I've just tried no again but still the same. The price was R1400 but your side did not allow me to buy the item. No when I went in again the price is R1600. Please can I get this item for this price two days ago (I've tried early this morning as well with no luck) when I wanted to buy it and give me banking details to pay this item.<br> Please give me feedback. Very unfair