FTC Complaint Against Lingo / Primus Telecommunications

FYI, here's the essential text of a complaint I filed against Primus
Telecommunications with the Federal Trade Commission yesterday:

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I ordered the Lingo service in September and was charged for it and as
I was setting up the service I had a problem setting up the "Call
Forwarding Always" feature. When I phoned the Lingo technical service
department I learned that the forwarding feature has restrictions not
previously mentioned: in particular, the service will not forward to
toll-free numbers (e.g. 800, 877, 866). I then called the cancelation
department to cancel the Lingo service and receive a full refund, but
the person answering the phone there [in India, actually] who claimed
to be a supervisor flatly refused to issue a full refund.

In late September I formally complained to Primus Telecommunications
in writing (certified letter), but never received a reply.