File a complaint with the FCC with a title along the lines of "Dishonest billing practices." I had a similar issue with my cable internet provider, and got a c

File a complaint with the FCC with a title along the lines of "Dishonest billing practices." I had a similar issue with my cable internet provider, and got a call from their Executive Customer Team the next day after I submitted my complaint. It helped that I saved the chat logs (or rather their website saved them so I could later download them) where I was promised a lower rate than what was billed and submitted those with my complaint.