A ... By any other name

So, I work at a small newspaper. I have an assistant named Linda, who hates me. There are a few reasons she hates me:

1. I'm her boss and 25.
2. She's 50.
3. I'm her boss and 25.

Today at work, I received a phone call from one of our advertisers whom I have worked with for almost 3 years. I answered the extention as usual "Hello, this is Laura how can I help you?" The advertiser (who shall remain nameless) quickly told me who she was and what she wanted. I helped her with her advertisement and as we were hanging up she said, "Thank you Linda." Then she hung up.

Thank you Linda??? What the? Linda? Um, hello! My name is Laura! Remember me, the person who designs your ads and makes sure that they are properly placed within the paper every f-ing week. The person who made sure that you stopped flashing your "how are you doing" at every person at the last big Chamber event (she was a little drunk). Uhhhh!