Hello @liezel25mangyao ,
Welcome to the community,
You can either find your contract and billing, by logging into your account via the EE App, you can click on view my bill or log in via the website, it should also be there, you can then download it and print it.
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.
