It has taken me months, literally four months, to deal with Accor CS and have a simple one night stay correctly posted to my account; There was invoice and everything to support the case.
In my experience it takes several weeks up to a few months for simple issues to be sorted out. I cannot imagine Accor Customer Service ever favouring the customer with any gesture of good will. They seem not to care or not to be empowered to.
Useless and a complete waste of time, fail to describe Accor Customer Service. It is simply a waste of money, both for Accor and Customer to have Accor Customer Service.