{% set customer = hookable_metadata.context.resource.customer %}

<div>
    <strong>{{ 'sylius.ui.phone_number'|trans }}:</strong>
</div>
<div class="mb-3">
    <span class="g-col-12 text-muted">
        {% if customer.phoneNumber is not null or customer.phoneNumber is not empty %}
            {{ customer.phoneNumber }}
        {% else %}
            -
        {% endif %}
    </span>
</div>