Very bad service, Promised delivery on one day and...

Very bad service, Promised delivery on one day and delivered much later. Wanted to return the TV in 14 day peace of mid period, customer service say they would deduct 15% of total price, It was no written on on-line terms and conditions. He promised manager would call to discuss the issue but no one calls. Emailed the store with no response. TV deal also included Multi hub, which was not sent with item.
Sincere advice, not to buy from these people, I would prefer big stores line PC world / Curry's.