Hello @Ninaleighmartin ,
Welcome to the community,
If you are on pay as you go, then you cannot add any accessory, as you have to have a mobile contract, sim or phone contract before you can get any add-ons, sorry.
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.
