I wouldn't have thought a phone software update would cause this @BUZBYBABE
I would suggest to have a word with your mobile networks customer services too to ask them about the issues with calling specific area codes.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.
@BUZBYBABE: 0845 numbers are chargeable, depending on your network, so it may be the case that you have a cap on additional charges to your plan, which you have reached, and this is why you're unable to make the calls. As per the advice offered by @BandOfBrothers please reach out to your network, as they will be able to clarify this for you.