VERY DISAPPOINTED

Very disappointed with Revibe, I purchased a phone from their SA website, paid for the phone in full, just to be told the next day that " the seller couldn't ship the order and that they are cancelling my order, with a refund within 7 days". That tells me that the goods they are selling are not theirs to sell?? how do you sell something that the seller doesn't want to ship anymore?? Crazy! I don't trust them anymore.