Thank you very much for tolaughbringing, Muri!
And I thank the "Wohngeldamt" for transmitting loads of money. Holy crap! I asked a cashier, and only when she affirmed that the transfer was OK and really for my account I finally believed it. WOW, I almost danced in the cashier hall
The times when I had to rob the piggy bank are finally over (poor piggy, almost nothing left though).