IS IT CORRECT TO SAY
I HAVE ALREADY PASSED THE CUSTOMER. OR
I HAVE ALREADY PAST THE CUSTOMER.
SPEAKING IN TERMS OF A TRAIN THAT PASSES EACH CUSTOMER.
Welcome to the forums, Shannon.
Please rewrite your post or edit it with Caps Lock off into standard English with correct capitalisation and punctuation.
Please note that this is not a general grammar question but a specific one. A better title would have been 'Passed or past?'