"My first step would be to reach out to my colleague and let them know I will be handling the matter moving forward. As the project manager, I think it's important that my internal team runs information by me first, before addressing the client directly. Next, I would get back to the client right away to let them know that I'm reviewing the project scope and to expect my call before the day ends. When I speak with them, I will not assume that the client knowingly went beyond the scope. Instead, I'll explain clearly what is within the scope and why my colleague reacted the way they did. Then, depending on the contractual agreement, I can give the client options. For example, we may be able to give them what they want for as long as they pay for the billable hours."