( CNN ) -- The small , black-and-white newspaper ad offered a discount : Nine holes of golf for $ 9.11 -- on September 11 . The management of a Wisconsin golf course said the idea was to remember the victims of the September 11 , 2001 , attacks , but the ad turned into a public relations disaster on social media . By Tuesday , TumbleDown Trails Golf Course was reporting death threats . The golf course in Verona , Wisconsin , placed an advertisement in Monday 's Wisconsin State Journal offering to `` commemorate '' the 12th anniversary of the terror attacks with `` 9 holes with cart for only $ 9.11 per person or 18 holes with cart for only $ 19.11 ! '' The ad quickly began circulating on social media , and the golf course 's Facebook page was flooded with angry comments . `` It 's an abomination and a disgrace , '' one commenter wrote . `` To make an opportunity out of a national tragedy is outrageous , '' another said . The management of the course posted an apology on Facebook Tuesday and on a recorded message on the course 's main phone line . `` Please accept our sincere apologies , '' the recording said . `` Our attempt to remember the tragedy of that day has been met with negativity and now even death threats . We ask that you please take a moment to reflect and remember those we lost that day , as we were trying to do . '' By Tuesday afternoon , many Facebook commenters were defending the course . Some called the ad an honest mistake , and some said outsiders were pumping up the outrage . `` They should n't have to apologize for anything ! Who are you people to judge , '' one commenter wrote . `` I 've played the course before . Nice staff and seem like good people . '' Another called the ad `` badly worded , ill thought out '' but added , `` I 'm not any more offended than I have been throughout the years every time I see a 9/11 limited edition coin on TV or exploding towers with an eagle crying on a T-shirt or ... the hundreds of others exploiting a tragedy for profit . '' A message left on the course 's voice mail was not returned Tuesday . Management said in a Facebook post the course may be closed Wednesday because of security concerns .
Social media erupts after course offers discount to `` commemorate '' terror attacks . Offer : $ 9.11 for nine holes , $ 19.11 for 18 holes . Management apologizes on Facebook , reports death threats . Course may be closed on Wednesday due to security concerns .