Telephone number on checkout form

If I add another field for Telephone number which is important for orders, it doesn't display or register on the order. The only way I can get it to included is by changing the Label for Company to Telephone and then people will fill that in.

Getting a customer number is important, any way to get this added for orders? if someone puts the wrong email for example then there is no way to get in contact with the customer!

Is there another way, I'm using customer_create_passwordless.html