O2

Can someone tell me please how to use my 3 months audible books credit??I’ve activated it and I’ve downloaded amazon audible app... how do I buy a book without getting charged?? Pls

I went thought the upgrade procedures yesterday and received a legal document by email. I was under the impression my phone would be delivered today. When I go on my o2 it says nothing about new phone and is giving me the option to upgrade.?Don’t wan...