Maybe the easiest next step is to call up one of the European DL numbers (see delta.com). DL has outsourced all their agents to AFKLM and those guys are definitely aware of the regulation. AF in particular has already gotten a couple of black eyes and is usually fairly cooperative.

SCC looks a little over the top for the first step although I welcome every step into that directing. We are not only ham sandwiches, we are paying customers.