Hi @pjpulumbarit
I am afraid the get_field/the_field expects a second parameter for the post ID otherwise the global post ID values is used.
Try changing the code as follows and let me know how it goes.
$service_name = get_field('service_name', $post_id);
$customer_name = get_field('customer_name', $post_id); // where $post_id is the post ID from which you are loading the ACF value.
Hope this helps.
