Ticketmaster doesn’t discriminate between the sinners and the saints, it takes and it takes and it takes, a Texas man claims in a new lawsuit.

Josh Davis just wanted his daughter to “be in the room where it happens"—in the audience of the Broadway hit Hamilton, that is—for her birthday when he logged onto Ticketmaster Jan. 9, he says.

Hitting the back button on the web portal caused his selection on the Ticketmaster calendar to change from a weekend in March to Jan. 17, Davis says in his complaint, also filed Jan. 9 in a Texas state court.

Ticketmaster refused to refund the purchase, so Davis’s mistake cost him $2,300 for tickets he can’t use to celebrate his daughter’s birthday in March, he claims.

Ticketmaster’s purchase system amounts to fraud in the inducement and a breach of contract, Davis says. He also accuses Ticketmaster of violating the Sherman Antitrust Act by using its monopolist position to “abuse consumers.”

Ticketmaster didn’t immediately respond to Bloomberg Law’s request for comment.

Tickets for Hamilton on Jan. 17 are being resold for as low as $410 on Stubhub, as of Jan. 10. The more desireable seats, like Center Orchestra seats, run between $999 and $2,100.

Davis is represented by his own firm, the Davis Law Group.

The case is Davis v. Ticketmaster, LLC, Tex. Dist. Ct., No. 201901922-7, complaint filed 1/9/19.