I understand that you are receiving information from performance review done by a client. Is that client important? Is that client part of the segment of target clients? For example, low cost airlines receive a lot of complaints, but most of those complaints are not about errors or “defects”, but about decisions made according to its strategy of keeping costs down. In the case you are receiving performance feedback from a target-client, you can start to acknowledge and thank the information received. Then, analyze and understand if it makes sense, if the company can frame and incorporate it. And communicate the decision to the customer. If the decision is to frame it, it may make sense to communicate the timing for its implementation.