Horrible service, no products

CTM online store called me to finalize an online store purchase for tiles that I had on my card.I finalised the order as requested, to my surprise as I was done paying CTM online store called me to tell me that they do not have tiles in my selected store.I asked them why did you then say I should finalise the order while you knew there were no tiles in my selected store?I fill that CTM online store ****med as they made me to purchase something they knew they don’t have.CTM online is not even offering to refund me because they cannot honour my order.I have been calling them since Tuesday and they keep on saying they will call back and they never do.