A golf course in Wisconsin has backtracked after its planned September 11 promotional deals generated widespread outraged.

As a form of remembrance on the 12th anniversary of the attacks of September 11, Tumbledown Trails Golf Course in Verona, Wis., was set to offer nine holes for $9.11 and 18 holes with a cart for $19.11.

Tumbledown Trails general manager Marc Watts told the Milwaukee Journal-Sentinel that the course offers the discount as a way to remind golfers, especially the younger ones, about the significance of September 11. The course has had similar promotions the past few years, but this is the first time it has generated controversy.

According to the New York Daily News, a new message on the course's answering machine says that employees of Tumbledown Trails have received death threats in the wake of the controversial promotion.

"This is the first time we've had any negative comments," Watts said. "So many people have come in and said, 'What a unique way to put that out there so people don't forget.' We'll do something next year. I guarantee you it won't be this, but we will not give up and will not stop trying to remind people of 9-11."

On Monday, Tumbledown posted several notes on its Facebook page apologizing for the uproar:

Late Monday the course posted this note, hinting that it may actually be closed on Wednesday: