Lies to boost sales

bought a Nike Air Max Dia on the 22.11.2020 at Cradel stone mall, I first went to check at Clearwater Mall but was tol stock is at cradel stone. I drove there to buy the sneaker. I asked the cashier and manager, I f the sneaker will be on sale on black friday and i was advised and assured that Nike sneaker will never be on black Friday sale. to my surprise the same sneaker, colour and all is on Sale. So they **** to me to boost up their sales. I would like this to be review as I was willing to wait till black Friday to pay for this sneaker.. Im very dissapointed and if this is not sorted out, I will have no option but to complain to the Ombuds. This is so unfair and very disappointing to say the least