Delta has responded to Anne Coulter after the author tweeted about how the airline made her move out of the seat she paid for.

It all started Saturday when Coulter was asked to switch seats on a Delta flight from New York to Florida, even though she had pre-booked her ticket and paid for extra leg room.

The conservative pundit said the flight attendant didn’t offer an explanation for the seat swap, and for hours continued to tweet about what happened to her 1.6 million followers, calling Delta “the worst airline in America.”

Delta initially tweeted an apology on Saturday. The airline then released a statement Sunday night, saying Coulter’s tweets started out as complaints, but “eventually turned into a public attack on the airline’s employees and customers.”

“Delta expects mutual civility throughout the entire travel experience,” the statement said, noting it would refund Coulter the $30 she paid for the preferred seating.

The airline also explained how the “mix-up” happened:

Coulter booked seat 15F (a window seat in an exit row), but then 24 hours before the flight she switched it to 15D (an aisle seat). At boarding time, Delta “inadvertently” moved her to 15A (window seat) “when working to accommodate several passengers with seating requests.”

When there was some confusion during boarding, a flight attendant asked everyone to move to the seat that was listed on their boarding pass. Everyone did, and “the flight departed without incident.”

Delta says it didn’t learn about the seat issues until Coulter began tweeting after the flight landed in Florida, noting the company tried to get in touch with Coulter several times to apologize “however, they did not hear back from Coulter until Sunday evening.”

But that wasn’t the end of things. Coulter continued tweeting about Delta and the incident until early Monday.

Delta’s relationship with Minnesota

Delta is based in Atlanta, but is a huge player at Minneapolis-St. Paul International Airport. MSP is considered one of the airline’s hubs, and it’s one of the biggest airlines there.

Delta has about 80,000 employees worldwide – about 8,500 of them in Minnesota, the state’s economics department says, making them one of the state’s largest employers.