The commissioners and landowners shall appear at the time and place set for hearing objections to said assessment roll, and the court or chancellor in vacation shall hear all objections that may be made, by the commissioners, landowners, or other persons interested, to the amount of benefit assessed or damage allowed to any tract or tracts of land on said assessment roll or to the assessments as a whole. After hearing all evidence offered, the court or chancellor in vacation shall direct the commissioners to make such alterations as shall be deemed just and equitable, by raising or lowering all or any assessment as the court may deem proper for the accomplishment of the work; and any changes so made by the court or chancellor shall be final unless appeal be taken.