Order Item Missing

I have made an online order on Saturday the 28th of March. On Tuesday morning the delivery guy phoned me and said to me that only 1 item of my order is at the warehouse and would be delivered. The other item shows out of stock. I phoned Incredible Connection, whereas i get told they would refund. My question was why did the web site not show out of stock, and i have to wait 7-14 days for refund. The same item is on sale at other retailers, but now i cannot go and get as the specials are ending since i need to wait for my money. Then the person said she would log a complaint, which she did. Suddenly i get told the item will be delivered on the 1st of April. On the 1st i contacted again via the website chat agent, whereas the person i was talking, first of all not very helpful, made me wait and told me to wait when i asked for response. Just told me i would be contacted in 24hrs where i said it has been more than 24hrs later and no communication. Then the person just started ignoring my messages. So till now i dont know what is going on, and i dont get feedback from Incredible Connection. This is not what i expected from the company. I do a lot of shopping in stores and always find them to be very helpful, but online leave a bitter taste and not sure if i ever buy from them again. So almost a week later i have no idea if i'm getting a refund or just have to wait till Christmas maybe to get my order.