BPI, my account number

i so hate , i always need to verify my account number in the customer service area at SM BPI bank when i forgot my account number. why can they have a search tool in their system when someone will deposit and having an invalid account number to search using the complete name? i guess this would be much easier to smoothen their process. i experience with Banco Filipino and that they will correct you instead after you deposit that the account number is wrong and give the correct one, as well as Export and Indusrty Bank do. i don't know if this is for security reasons though...