Business ProfileforBanner Recreation & Marine

Good Morning, At the end of May, my husband went to an ATV dealership to see about purchasing a new ATV. He found one that he liked, but was not completely sold on it. He wanted a few weeks to ensure he really wanted that item (we were going to Edmonton and he had one up there he wanted to look at). The salesman had told him that he could put a $500 deposit on the said machine, which would hold it for 30 days. Before the 30 days was up, he decided he did not want the local machine. He approached the company for a refund, and they told him that the deposit was non-refundable. There was no indication on the receipt given that it was non-refundable, the machine has never been in our possession, there is no full bill of sale done for the machine, and the machine has never left their premises. Can they do this? Being that the 30 days is up now (we've been trying to dispute it through our credit card company being the dealerships refusal to refund), what course of action is available for us now? The company involved is Banner Recreation in Lethbridge AB (they have 5 locations through BC and AB)