Please see EE guide here, which explains the steps you need to take to subscribe to this service.
To contact EE Customer Services dial 150 From your EE mobile or 07953 966 250 from any other phone.
EE standard opening hours are 8am to 9pm weekdays and until 8pm on weekends. Calls outside that time (till 10pm weekdays and 8pm on weekends) cost 50p per call. These costs also apply to calls to 07953 966 250.