Bad customer service and misleading information

I have had such a very bad customer service experience at Sleepmasters Durban in West Street branch. I have made a purchase on the 29/12/2023 of a double bed mattress and I did specify to the sales consultant that it is a matter of urgency I need the mattress ASAP as of the 30/12/2023 and he promised me that , it will be delivered on the day specified and I made a payment of the whole amount including delivery fee to my greatest surprise till today I have never received my mattress and I have already assembled the new bed but haven’t got my mattress and there’s no form of communication from management to staff calling me and informing me what’s causing the delay and I have been sleeeping on the floor since Saturday to date because I can’t sleep on the wooden bed base with no mattress and I would like either management or superiors to investigate the matter because surely there should be some sort of explanation that can cause them to fool me