Duplicates Customer Number

Dear All,

im trying to implement a query to select some customers but i got a duplicate values:

how can i remove them :

the query is as below:

select distinct

cust1.rac_bill_to_customer_num  cst

,cust1.rac_bill_to_customer_name

from

apps.ra_customer_trx_partial_v cust1

,apps.ra_customer_trx_partial_v cust2

where

cust1.customer_trx_id = cust2.customer_trx_id

and cust1.BILL_TO_CUSTOMER_ID in (select cat.customer_id

                            from apps.ar_customers_all_v cat

                            )

and cust2.gd_gl_date < :P_TRX_FROM_DATE

and cust1.invoice_currency_code = nvl(NULL,cust1.invoice_currency_code)