Bad press. I live about an hour from you in knoxville and the local ABC affiliate (WATE channel 6) has a segment called “6 on your side”. The reporter is Don Dare and he takes stuff like this on all the time, complete with cameras.
Bad press is VERY powerfull. Contact your local TV stations and see if they have a consumer affairs reporter. Trust me, they love this stuff. Customer being threatened/screwed by big mean company.
The lawyer is also a very smart way to go. Just make sure that he only gets paid if you do.