It's like a cow's opinion

I called to make an appointment for a hair cut.

Her: Okay, so is 3:30 ok?
Me: Sure.
Her: Last name?
Me: Lo. L-O.
Her: First name?
Me: Audrey.
Her: So that's A-D ...
*I spell it out for her. This is not unusual, as once in a restaurant, the hostess spelled it M-O-D-R-Y.*
Her: So that's Audrey M-O-O.
*I almost burst out laughing here.*
Me: Um, no. It's L-O.
Her: Ok, L-O-O.
Me: No. Just. L. O.

LOL. A moo point. As in a cow's opinion. It doesn't matter.