ssis dupication issue

hi there

the problem im facing is duplication i am uploading monthly customer details of my entire customer sales report (excel) to sql server database through ssis. after process (debugging ) when i verify table in sql server i've found that number of rows count match with excel sheet but total sales is different. my excel report contains more than 6lacs rows which is sorted by date wise customerswise productwise purchase rate , for ex abc customer purchase x product on 06 date total amount of that transaction is 20.rs next day same customer purchased y product total amount is 50 rs here i face problem when i upload package it wasnt show any error and deployed succefully but when i check data in sql it only captured 1st transaction amount and copied it datewise means only 20 rs transacation (1st transaction amount) shows in that customers for his entire month purchase (instead of 2nd transaction amount 50 it shows 20rs and that happened to every customrs in every transactions) 

report is datewise customerwise sales report so it should contain dupicate value 

pls help me 

reply ur mail id so that i can send you report for making thing clear

sorry for my poor English apology