Kernrechtsfrage
Whether the complaints were filed within the statutory 30-day time limit.
Extrahierter Entscheid
The complaints were filed too late because the receipt confirmation showed delivery on 11 February 2008, and the deadline expired on 12 March 2008.
Extrahierte Begründung
The postal Track & Trace indication of 12 February 2008 could not prevail over the signed receipt acknowledgement showing actual delivery on 11 February 2008.