MLS listing has an error, how to fix it? (days on the market)

[Justin B.]

My family is selling a commercial piece of property, and we tried using an auctioneer last year, and we since relisted it with a realtor who told me it was still on the market all this time. How can we change it? My realtor says it's useless or impossible, I just think he's being lazy.

Any help would be greatly appreciated!