My take on this is that any agent you speak with can notate the record with comments. The only time I have run into this problem is when challenging an agent on the issue or requesting to escalate. This is why it is paramount to hear their answer, politely accept it as fact, and end the call. When done this way, I find that the agent simply moves on to the next call without notating my account.
Nothing worse than hearing "869, you've already discussed this with another agent!"