Thanks for your post and welcome to the Community Forums, oldbagfrom,
Sorry to hear that your SIM has been cancelled. Unfortunately there is no way to extend further as this is part of the network migration process since 2017 and it can no longer be extended any further.
We can arrange to have a replacement SIM sent, however keep in mind that the SIM will auto-cancel if not used within 30 days, you may want to wait a little closer to your arrival time before ordering.
Cheers,
Corey C