Confirm delivery on date of purchase but nothing

On 21st March I bought a number of items from Coricraft, Design Quarter, where 2 chairs were taken on the same day, a 4 seater dining room suite to be delivered on 2nd April and 2 high back chairs on order. When I was presented with the invoice I noted that all items had a planned date of 11th May, I queried it immediately and was reassured it was a system default however my request was noted on the system and confirmed.. By midday on 2nd April I had received no telephone confirming delivery so I phoned the store - the person on the other side was confused as nothing reflected on their system, she said she would follow up with the warehouse and get back to me. An hour later I get a call from the warehouse saying they had been requested to fulfill a delivery request and would Monday afternoon be okay (6th April), absolutely not because I was away and secondly the delivery date had been confirmed on day of purchase. I called the store again and asked to speak to the supervisor or store manager and then was handed over to Alecia. Well Alecia promised to look into at and get back to me - really, still waiting for the call. As far as I'm aware the store was open over the weekend.