Rule 37.03(1) of the Tennessee Rules of Civil Procedure is the rule that provides for sanctions for the failure to provide complete answers to interrogatories and other discovery. Here is the text of the rule:
A party who without substantial justification fails to supplement or amend responses to discovery requests as required by Rule 26.05 is not permitted, unless such failure is harmless, to use as evidence at trial, at a hearing, or on a motion any witness or information not so disclosed. In addition to or in lieu of this sanction, the court on motion may impose other appropriate sanctions. In addition to requiring payment of reasonable expenses (including attorney fees) caused by the failure, these sanctions may include any of the actions authorized under Rule 37.02(A), (B), and (C) and may include informing the jury of the failure to supplement or amend.
As you can see, the default sanction for failure to supplement or amend is a bar to the use of the evidence.