they say our devices never work wrong , oh i should say that Unfortunately iam living in IRAN , Internet speed is too low . does it depends on country ? because i use Filterbreaker too for many filtered sites in IRAN . oh your so lucky people that ur not in such country .
They can say that, but you can say, show me so I can see if someone is not stealing my connection.
They can't just say that this is what you used without having a record of it. Although in Iran I'm guessing consumer rights are not quite the same as in the US.
It's like someone going shopping for you, asking you for $300 and not showing you what they bought, then handing you and empty bag and saying "it was a very expensive empty bag".