Are you on Facebook or Twitter? Then send a PM to UnitymediaHilfe (www.facebook.com/unitymediahilfe
) with your Contract Details (Customer Number, Name, adress und Date of Birth) and tell them your problem. They'll respond normally within 1 or 2 days (not Sunday), and actually they'll send you the push-on-Adapter.
The hotline supports in german only,because german is the Contract language in Germany...