Bi-annually is every 2 years. Semi-annually is every 6 months. Which did you mean?
Regardless, I got fed up with Cablevision's overpriced TV service and disconnected a year ago today. I've saved almost $700. -- Critics are asking if Megyn Kelly blows goats.
I think you knew I meant twice a year (since that's what most cable operators do and that's the definition of the word (semiannual is a synonym), but just chose to be contentious.