Companies have embraced Twitter (or at least tried to).
You’ll find companies of all shapes and sizes attempting to get to grips with the new medium.
Unfortunately not all interactions will work out well for people, but they can always try again.
But one thing people need to remember is that Twitter is very public. It is not private.
If you wouldn’t feel comfortable discussing certain details in public, then why would you do it on Twitter?
Even if you felt comfortable talking about things it may not be appropriate to do so. So while it’s fine to give and discuss general things, would you really want a supplier discussing your account’s finances?
I know how I’d feel about that….