Is AUTHOR wrong in the post ? POST : (IDK if it's against the rules but technically my manager did this, not me. So the question is am I the asshole for thinking he's in the right, but that's a little wordy for a title)

&amp;#x200B;

So I work at a fast-casual restaurant chain and we have a frequent "problem" customer named Mary\*. Most of us have a story about her being rude/yelling/threatening us. She likes to do the 'talk to the manager' thing, even to the actual managers, so she's always contacting corporate somehow and complaining about things like mistakes in her order. Our chain takes 'the customer is always right' as basically our bible so no one has ever said a negative word to her or had an attitude or anything (they'd be fired without a second thought, it's happened before). Mary also happens to be Indian, and while I've always been able to understand her face-to-face with a little effort, it's apparently more difficult on the phone when you can't also read lips and anticipate what she's going to say. 

&amp;#x200B;

My manager, Isaac\*, who is new to the store, took a phone call from her and asked her to order online because he was having a hard time understanding what she was saying (I don't know the exact words used, obviously if he had an attitude about it he's TA, but from my perspective he's a really nice, earnest guy). She was offended by this, and there was a further misunderstanding where she said "I'm never coming back, (something else I forget)" and Isaac said "Good-" and before he could finish trying to respond to the second thing she said, she interrupted, thinking he was addressing her 'never coming back' (I wish). She started screaming, demanding his full name, manager, etc, the usual.

&amp;#x200B;

Apparently she also contacted corporate and HR and is filing a formal discrimination complaint against him, plus she's threatening to actually sue. Technically we're supposed to try to direct customers to do online orders anyway since we have bare minimum staff and don't have the time to constantly be on the phone punching in people's credit card numbers longhand- but we're supposed to take it if they insist. Plus, what was he even supposed to do? Pretend he could understand her and give her the wrong order and let her unleash the beast again? HOWEVER I do understand her perspective and would probably also be upset if I felt like I was missing out on something other people could do because of something I can't control, like my country of origin. Especially if I went to the trouble of learning an entire second language only to be basically told that I shouldn't have bothered because it isn't good enough to be understood. Still, I can't help but feel like she's punching down and with her past history of berating us, I see her as being in the wrong here- but I'm biased, so that's why I'm asking. 

Am I the asshole for thinking Mary is overreacting and Isaac is in the right?

\*names slightly changed since it feels unprofessional to not do that