Hi @login, thanks for your post.
The ticket essentially says that when we re-placed the order for your new account, it automatically generated a new telephone number. As we're retaining the number from the old account, we had to place what's know as a 'renumber' order - we changed the telephone number that was auto generated and replaced it with your old one.
I hope this helps but please don't hesitate to get back in touch if you need any further assistance.