I have moved your post to this new thread, so you can get personal help from the community or moderators, so please watch this thread for updates.
If a number has been inactive for more than 30 days, its not possible to recover it.
There are no new physical phone lines being provided, all new BT Retail phone connections are made using BT Digital Voice, so that any old numbers that were originally connected to an exchange building, would no longer exist.
This is just a customer to customer help forum, everyone here, including myself, are just customers.
The only BT Employees are the forum moderators.