How to use distinct to avoid duplicate records while using joins in SQL server

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SQL-Server

HI I have created the below stored procedure this is working fine but fetching duplicate records with same date.

SELECT  
    RB.Billing_Account_ID__c AS AccountNumber,
    AR.Phone__c AS PhoneNumber,
    T.CreatedDate AS CreatedDate,  
    U.Name AS UserName,
    T.[Description] AS [Description],  
FROM Account AS AR    
    LEFT JOIN BCAccount AS  RB ON AR.ID = RB.Residential_Account__c  
    LEFT JOIN MyTask  AS T ON AR.ID = T.WhatId   
    LEFT JOIN [User] AS  U ON T.OwnerId=U.Id  
WHERE  T.[Subject] = 'ABC Testing' 
    and BETWEEN @PastDateTime AND @CurrentDateTime

My result is displaying like below

2016-04-24 23:44:08.000
2016-04-24 23:44:08.000
2016-04-24 23:44:08.000

the above records are same and displaying as duplicate

i wnat to avoid duplicate.
Could you please help on this.

What I have tried:

I have tried to avoid duplicate by using the below things but it is not working in my select command

CONVERT(VARCHAR(10), YourDateColumn, 101),

i am getting "ntext data is not supporting distinct in sql server".