blackfriday 80% ****!

I rarely complain, but i feel deeply dissatisfied with spree. I received an email claiming 80% of selected items , amongst the items i spotted a pair of stan smith adidas which i booked out and process in the first 6mins of the sale. i payed for it and even got a message my items were handed over to the courier, right.. good to go , wrong.. 5days later I've received a mail stating my item (surprise surprise the stan smiths)were out of stock, went online and saw it for sale ....I dont know whats going on but if you not willing to give the 80% dont invite me to shop @ 80% off.. .I once was a big fan telling friends, co-workers and family about how professional spree handles online shopping ...boy was I wrong ...