@skruttles sounds like you’ve activated a call blocking feature on the phone that will block unknown or with held numbers.
From the phone app tap More > Call Settings > Call Rejection.
Next, tap ‘Auto reject list’ and then toggle the ‘Unknown’ option to the on /off position and all calls from unknown numbers will be blocked/unblock
To contact EE Customer Services dial 150 From your EE mobile or 0800 956 6000 from any other phone.
