1.5 years ago we bought the V12 because Dyson is robust and high quality. The product has chronic problems. The material used in the main frame joints is very poor quality. It started leaking air in a short time.
The draft and dust container started not to turn the wind correctly.
3 days ago we called after-sales services. 
(According to Turkish law, this product is a hidden defective and defective product)
We demanded a replacement, but they lie so easily!
I'm surprised, saddened and very angry.
I searched the e-mails of the top managers, but some of them have moved to another company.

The bottom line. I regret buying Dyson.
There are so many complaints about it from every country in the world.
Dyson has not been honest.

I want to replace this bad product immediately.

Sincerely regards