[VoiceOps] Contacting Carriers and CLECs (Specifically T-Mobile today)

Does anyone know of a centralized list or standard method of reaching other CLECs and Carriers, specifically Cell Carriers? Something similar to Puck's NOC list (http://puck.nether.net/netops/) is what I am thinking of. We are having some routing issues to certain numbers we own from T-Mobile and are having issues reaching the right type of support staff, especially since you can't even get their regular support without an account. Thanks, -Scott