Kept chasing, it got escalated from ALL Customer Care to another team, the ALL Guest Service Executive Department
Hotel responded to them a week later claiming the benefits were provided - obviously hard to dispute exactly what occurred in person over a month ago - but I was given 500 points anyway...
Wishing to thank you for your loyalty, I am pleased to offer you, on behalf of the Accor group, 500 Rewards points already credited to your ALL account.