If you are thinking of signing up to vodafone, CHECK THESE SITES FIRST:

This is Money: Vodafone complaints

Trust Pilot: Vodafone reviews

Money Saving Expert: Wrong Vodafone bills

The Guardian: Vodafone billing chaos

Or google "Vodafone billing problems" and find many more sites with the same story.

If you still sign to Vodafone, you have been warned.