Its fine, turns out buying credit is not enough, you must make a mandatory call with your sim every few months or your whole phone number gets suspended. (many people calling you does not count)
May wanna note while that is the case and you are suspended you cannot use 150 or call EE with that number (even if you have topped it up) it simply says you have no credit and hangs up on you.
You have to use a different phone to call up with.
