Hi Mar53,
Thanks for coming back to me and explaining that, I am sorry you've been dealing with that issue for a while with no resolution.
I will be happy to have a look into this for you.
What I'm going to look at his your mobile coverage on our coverage checker, then have a look at your network settings.
If I find an issue then we'll work together to solve it one way or another 🙂
I'll send you a PM now so we can chat about all of this securely.
Thanks,
Megan_L