in active customers delete

Dear sd gurus

i know how to block in active customers i mean suppose i created 2000 customers and all are involving in business process suppose from 1500 to 1600 ( 100 customers continusily numbers ) easily we can block them bt OV52 /OBR2 OR SARA

but what my doubt is if customers are not in continuously numbers ex 5, 8,10,100,250 like this at a time how we can delete from sap