Parent Child Relation in same Table
A common way to do this in SQL Server is to use a Recursive CTE:

Here's your test data as an insert:

CREATE TABLE #yourmom
(
    custid INT,
    custname VARCHAR(10),
    deptid VARCHAR(3),
    company VARCHAR(10),
    parentcustid INT,
    enrolled BIT
)

INSERT #yourmom ( custid, custname, deptid, company, parentcustid, enrolled )
SELECT x.custid, x.custname, x.deptid, x.company, x.parentcustid, x.enrolled
FROM   ( VALUES ( 7060, 'Sally   ', 'AB1', 'comp1 ', NULL, 1 ),
                ( 6953, 'Ajit    ', 'AB7', 'comp2 ', 7060, 1 ),
                ( 6957, 'Rahul   ', 'DE1', 'comp3 ', 7060, 1 ),
                ( 6958, 'uday    ', 'TG6', 'comp4 ', 7060, 1 ),
                ( 6959, 'john    ', 'HY7', 'comp5 ', 7060, 1 ),
                ( 6960, 'netaji  ', 'HY5', 'comp6 ', 7060, 1 ),
                ( 6961, 'prakriti', 'GT6', 'comp7 ', 7060, 1 ),
                ( 6962, 'sachin  ', 'KL7', 'comp8 ', 7060, 0 ),
                ( 6963, 'santosh ', 'KK5', 'comp9 ', 7060, 1 ),
                ( 6964, 'Ravi    ', 'PP0', 'comp10', 7060, 1 )
        ) AS x ( custid, custname, deptid, company, parentcustid, enrolled );


And here's how a Recursive CTE would look for it:    

WITH yourdad
AS ( SELECT y.custid, y.custname, y.deptid, y.company, y.parentcustid, y.enrolled
     FROM   #yourmom AS y
     WHERE  y.parentcustid IS NULL
            AND y.enrolled = 1
     UNION ALL
     SELECT ym2.custid, ym2.custname, ym2.deptid, ym2.company, ym2.parentcustid, ym2.enrolled
     FROM   yourdad AS yd
     JOIN   #yourmom AS ym2
     ON ym2.parentcustid = yd.custid
        AND ym2.enrolled = 0 )
SELECT *
FROM   yourdad;


There are some Great Posts® written about them:


Adam Machanic
Jeff Moden #1 and #2
The late great Dwain Camps


Hope this helps!