I am a board member for the Madison BTRB, and I very much look forward to seeing all of you at the meeting. I will forewarn you now, however, that the BTRB pretty much has its hands tied regarding anything with Charter's cable-modem operation (thanks FCC and Congress!). The BTRB, despite the name, really just manages the cable franchise between the city and Charter. Given that the WI legislature recently passed a law allowing for state-wide franchises for TV distribution, the BTRB may actually be defunct shortly in any case.
Additionally, there is some discussion about the possibility of creating a publicly-owned fiber infrastructure that could be leased to any ISP, which we theorize, could circumvent the standing law prohibiting municipal cable operations. Something similar to Project Utopia, in Utah - http://www.utopianet.org/
So, please do come and attend the meeting, but also understand that the BTRB has zero say or input on Charter's cable-modem business. Coming to the meeting may be a good idea, though, because a Charter representative may be there. Moreover, the BTRB members are concerned about this issue too, and may have some constructive advice on how to promote your complaint.
Every cloud has a silver lining; you should have sold it, and bought titanium.