Solved! Go to Solution.
Unlike the US, where a Wireless customer pays for airtime inbound, and outbound. Something that most individuals are not aware of with the billing shift to unlimted calling. In Europe, to include the UK, the calling party to a Wireless line pays for air time, not the Wireless customer. Wireless customers only pay for outbound wireless calls.
The surcharge you make mentio of exists in almost all European Wireless market areas. Your best alternative is to use WiFi or 4G Wireless data connections and a calling App such as WhatApp, or some other equal calling via Internat App.