I agree with Nathan…
I would use it differently. I would do something like this I think.
$term = get_queried_object();
$var = get_field('field_name', $term);
Then loop through $var.
if ( count( $var ) > 0 ) ) {
$manager_name = get_sub_field('service_manager_name');
if ( $manager_name ) :
// do stuff
endif;
}
Note this is from the top of my head, so untested.