"Unprofessional !!!"

There was a contract to design an eCommerce site, they ask for an advance payment of 60% that's thousands of dollars, but after 4 months of waiting they never provide us with reports or any improvement instead they keep creating excuses and until they become unresponsive it was really frustrating they are a big company they should be professional enough to inform us if they wont be able to create the site or much better refund us the money they have collected since there was no work done..They cant be trusted that's it not a good one to have business with.