the start dates and end dates based on the call so they are not static.
by changing the date from (5,30,0) to (6,30,0) does not output the
correct information ! still getting negative values (###)

A B C
13/02/2006 07:55 13/02/2006 07:59 ###
10/02/2006 18:55 13/02/2006 06:35 0:10
13/02/2006 22:10 14/02/2006 07:00 0:30
14/02/2006 07:55 14/02/2006 08:00 ###
13/02/2006 07:55 14/02/2006 08:00 12:35