Comcast is charging me $12,000 early termination fee when I didn't terminate and I am using the service

I am using Comcast for phones and internet, and I am paying my bill monthly and along comes an early termination fee of $12,000 they have turned off my phones and internet twice for non payment. I never cancelled and this is causing me mega stress! Of course I won't pay the $12000.00 (plus finance fees for a year) I pay the monthly service amount. I don't know what to do, when I call no one can help, they often just put me back in the que after listening to my whole 20 minute story. That happened 3 times one call that lasted 2 1/2 hours and nobody actually helped. I have filed a dispute with Comcast and a claim with the Attorney General of Washington state. Anything else I can do?