@serry , are you having problems at home with network? Have you done a check with the coverage/network checker to see if there is a problem where you are? You can also report the problem and receive updates.
I have always found customer service helpful and have never had a problem with the network, it might be worth writing a bit more about your problem and maybe someone can help.
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.
