I am trying to find if BT offer an Add-on so I can get a discount on voice calls and texts to a number in the republic of Ireland
@Irish-Lynda Thanks for posting, I don't believe there are any BT Mobile add on's that cover what you're looking for, sorry.
When I'm calling & texting someone in the Republic of Ireland I use What's App so that may be something you might want to consider.
Thanks
Neil