Pathetic!!!!!!!!

I ordered a 32” Samsung smart HD TV for my children which they have been saving for months. The delivery promise being 5-7 working days, they were happy to know they will have their own TV before the end of the holiday, The order was placed on Sunday 26 September 2021 online. The needed documentation was sent and the order was processed on 27 September 2021, with the e-mail stating that the TV has been released and will be delivered within 5-7 working days, thus the last day my children could receive their TV will be today 6 October 2021. E-mail received on 29 September 2021 said the order has been dispatched and the courier company will be in touch. Monday 4 October, I phone Game as I haven’t from a courier company regarding this order and I was informed that it hasn’t been shipped yet but the courier will pick it up on 5 October. 5 October I receive a SMS from Dawn wing that my order from Game is scheduled for delivery on this day, 5 October. Nothing came! The whole day we waited for nothing. 6 October I phone the courier to ask what happened to my parcel and they said the driver had too many deliveries so he will bring it today, 6 October 2021, which is day 7 of Game’s promise! Now at 14:17 on 6 October 2021, the final day of their promise, I receive an e-mail to say the TV is out of stock!!!!!!!!!!!!!! What the hell?????????? Never in the whole time we waited for this TV did they mention it is out of stock! I mean it was ‘Released for delivery on 27 September 2021’. I want this TV now! Before the end of the week! I would like someone to explain to my children how a TV that has been released can now suddenly be out of stock and to tell me how something like this can happen????????? How can you only inform a customer something is out of stock after it had to be delivered already??????