Callback G500 W463a fuel transport module. Kafka lives!!!

There is a callback campaign for the G (at least the 500) because of a possibly defective fuel transport module. You should not drive any more. I tried to get an appointment with the dealer today, there they told me that the tank can only be filled up to 20%. I still have 60% petrol in it. Answer: A repair is not possible. I should drive the empty. That is kafkaesk: How, please, should I get the tank empty, if Mercedes writes, one has to “immediately” in the workshop???? Should I now wait for the evaporation of the gasoline??? Did Mercedes write, but received no answer. How do you do that? Flaking off the gasoline? Suck out the hose? Put away in the Frankfurt station district? Greeting from the wsp