HI dinglestar24, thanks for getting in touch with us and we are sorry to hear that you are having issues with the voicemail profile, we will be able to get this reset. Can you confirm if you are still having issues with this? ^CW
HI dinglestar24, can you confirm that all the messages have been read but the voicemail icon is still showing. If this is the case let us know and we will look in to this via private message for you. ^Chris
It looks like this could be an issue with handset itself,we have done everything on the network side and the next step would be to do a factory reset of the handset, please back all photos and messages before you do this as they would be lost. ^Chris.
I don't think it is. This handset is brand new; I had the same issue with my previous handset, a Galaxy S7 but with that one I was able to hide the notification, something you can't do on the newer phone.