@Ursalzona 274 hours is 11 days! Within a time frame of 24 days, this may only include the days after which your account got deleted.
Do you know whether the servers / VMs / etc. associated to the account have been deleted? Probably turned off.
I sadly cannot contact Hetzner any better than you can. I guess I can contact customer support, but they'll tell me the same things they told you...
@ErikUden I just tagged a guy who works in there. There is a German phone for customer support - not sure if speaking in German they will treat you with a bit respect. The only thing I know is that Ursal.zone went down and my account was deleted. And I received the email saying that they terminated the contract and wouldn't give me the reasons why. Pure Kafka.