Still no contact from Avis

Please note that no one from Avis ever contacted me since your response. I don't know whether the Regional Manager is still investigating however, I do feel an update or a courtesy call would have been appropriate to inform me of what is happening.<br> <br> Up to date, I haven't received even the invoice to account the huge deduction. Is this how Avis treat their customers? Do they have a right to take whatever they want from my credit card without even providing me with a justification?