Microsoft's new sales model cut into revenue for Dynamics reseller, Columbus, for the third quarter ended September 30. But the Copenhagen, Denmark-based company posted a 59-percent growth in EBITDA for the most recently ended period. EBITDA hit about $1.2 million in the period just ended. First-quarter revenue of about $32.9  million was about six-tenths of a percent higher than in last year's corresponding period.