Refund for D4 - Waiting for 3 days

Bought the game and only then realized, as Battle.net gave me a warning, that my CPU is below the minimum requirements.
Therefore I did not even install the game and asked for a refund.
Automated refund says “I am not eligible”, yet I did not even install the game…

My ticket was sent 3 days ago, nobody has even touched it.

Shambolic support from Blizzard.