Question about be quiet! Dark Power Pro 12

Now something has to go here, the delivery date was almost meant for me 1 month ago which was not kept. The second delivery date was last Friday, which was also not met, and now it has been postponed again by half a month, and then it doesn't arrive, and you don't even get a discount for that? I am very disappointed that they still can't keep the delivery dates after the second time.