Yuppers. *YOU* can take them to court for violation of 47 USC 227, and clearly show 'wilful and deliberate' non-compliance. The mere violation entitles you to 'statutory damages' of $500 per fax. The 'wilful...' part entitles you to _triple_ that amount, per fax.
Faking the Caller-ID, runs afoul of FTC 'telemarketing rules', +and+ similar FCC rules. The govt. has to go after them on that, but it is $11,000 in fines for *each* instance.
Note: What you're getting isn't from "FAX.COM" any more. The feds _did_ sue them out of existence. The perps behind that operation, _didn't_ "learn from the experience", however, and _despite_ being named *personally* in the court orders, have set up a new network of sham corporations to continue their abusive ways.
The "wheels of justice" are grinding slowly, but when the hammer falls, there _will_ be prison time involved. The Feds do _not_ take it lightly when somebody *deliberately* sets out to violate their orders.