In all cases contact the Youth Office in Hamburg: http://www.hamburgportal.de/hamburg/jugendamt.html
Or the following Counselling Centre in Hamburg:
Suchtberatungszentrum „Kö *Schanze" Information, advice and treatment for drug-using adolescents
Die BOJE Addiction counseling and treatment for young people
Drogenambulanz für Jugendliche und junge Erwachsene In addition to the drug problems, all additional mental, family and social problems are treated