Myflowertree — order not delivered on committed time

I have ordered flowers, teddy, and chocolate from my flower tree and selected the delivery time between 6 pm to 9 pm on 14/02/2020 and then they have updated their delivery status on the website that delivery attempted at 4:15 pm 14/02/2020.
Till now they have not delivered the products and neither their customer care number is not working [protected].
The order number is: 636015