Hello @eadiemoira9 ,
Welcome to the community,
What add on are you wanting to add? You should be able to do this by logging into your account, might be helpful to have some more information.
To contact EE customer service dial 150 from your mobile phone or ring customer service for free using Skype or another phone: +44 800 079 8586 or +44 800 956 6000.
