Hi there @mike1969dfc
Welcome to our Community and thanks for your first post; I am sorry that you're having some issues with your SIM when you have used a different handset. The code we would have sent for your data roaming would not be linked to a SIM that requires unlocking.
Have you been able to test your SIM in another handset? More than likely, the handset you have used (the Alcatel) has been locked to another network and as such you can no longer use it; you would need a new unlock code.
You can read more about that online here
I assure you, you are not being ignored. All our lines are open and we have agents doing all they can to answer your calls as quickly as we possibly can. We would advise you not to cancel your Direct Debit as this can have an impact on your mobile account which has to have an active direct debit to remain active with us.
Cheers