construction firm will not pay wages or tax (Munich)

is there anyone can help me, or is there anything i can do about a well known construction firm in munich who have not paid me or my mens wages or tax, this guy from the office tells me 4 weeks later that i have been working through someone else and have to find him for my wages, i have left a copy of the email he sent me, at the end of the email he smuggly says god save the queen

Hei Noel,

wir sind in Deutschland und können nicht englisch.
Schreib uns doch auf Deutsch.
Ausserdem haben wir Dir schon sehr oft mitgeteilt, daß Du zu keiner Zeit unser Vertragspartner warst, sondern Mr. Cain.
Somit ist er unser Ansprechpartner und auch Deiner. Er hat Dich geschickt, oder ?

Mit freundlichen Grüßen and god save the queen.
THIS SO CALLED MIDDLE MAN IS STILL WORKING THROUGH THIS FIRM AND THE FIRM KNOW WE HAVE NOT BEEN PAID, I WOULD BE GREATFUL FOR ANY HELP IN ANY WAY SO THIS WILL NOT HAPPEN TO ANY OTHER MEN...BY THE WAY ME AND 3 OTHER MEN TRAVELED FROM IRELAND TO GERMANY IN A VAN TO WORK FOR THIS FIRM.ANY HELP WOULD BE GREATFUL EVEN WAYS I COULD SHAME THIS FIRM
MANY THANKS
NOEL
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