A customer just brought up an issue from June and was super ****** about it. They wanted to know exact details about what occurred (even though it won't matter since the matter is long since resolved). She then went on a tirade saying that we were being held responsible for the issue and would suffer any charges that went with the issue.
I responded back with an answer and a good degree of diplomacy, but, oh no, she just kept going.
She's with a customer that we're gently ushering out the door anyway. Their demands are above and beyond the financial returns for us. I'm the lead point with this relationship, so I've had to deal with this headache for over 5 years. She keeps demanding an answer, but I'm telling her that I have no way to provide it to her since it was in friggin June, and we have no need to keep those types of records for so long.
I'm usually ridiculously patient, but she's pushing the wrong buttons. She is conveniently overlooking the times we helped her out or the times that they made an error (which outnumbers our faults nearly 20 to 1). I worded this much more cordially, but I ended up saying, "You can charge us for the issue, but I'm not gonna sit here and listen to your mouth as well. Pick one or the other, but I'm not dealing with both."
I'm getting ready to turn that bridge into an inferno.