"An upgrade to 16GB is not possible." (Although promised in the data sheet)

Because I was previously with Fujitsu (Amilo, A-series, S-series, etc.) always highly satisfied, I bought this device (my fourth portable PC from Fujitsu) - in the hope that the information on the data sheet are correct. But "an upgrade to 16GB is not possible", Mr. Steffen Höfer wrote me (Fujitsu Technology Solutions, Technical Support). well fine. And it gets even better: In order to upgrade to at least 8 GB RAM is only a very special permitted only in authorized workshops (priced totally unacceptable) is available of course. (Tomorrow I leave this information provided by the "Technical Support" in an independent dealer check. If the messages of the Lord are true Höfer, is the "bargain" back to the sender.