Little details like dual language ATC in Germany, Canada etc. gets carefully omitted by the accused.
Dual language ATC in germany exists only for VFR traffic where both languages may be used. For IFR traffic only english is allowed, except for emergency use of course. However, since ATCOs from all over europe work both in germany and in eurocontrol controlling german airspace any local lingo the relevant ATCO might speak should work as well.