Can anyone get the callback function in the API to work, when creating an address?

I've tried for over a week now, and the guys at Blockchain basically ignore my well written support cases..

The API is well written and documented, and I would love to get it too work.. But I don't get any callbacks when people have transfered money to the generated addresses...

EDIT (16-01-2013 14:13): Now the API seem to work.