Hello LunaB
Sorry to hear of the mobile service issues, we appreciate you taking the time to contact us via the forums and welcome to the community.
I can see you have spoken to the team since your post and there has been a call made during this time also. Can you confirm if this has now been resolved?
If not, can you confirm if you get the error message when calling specific numbers or any number? We have some helpful tips here virg.in/phonefix that may help.
Rob