BT, awful, just awful
had months, literally months trying to get BB dropout issues resolved. It was blindingly obvious it was a water ingress issue because it was worse every time it rained without fail, which was confirmed only recently when a decent engineer finally turned up. But try and explain this to the robotic script repeaters on the help lines, NFC. And then all the false promises of follow up calls etc. If 4G providers could price more sharply they could take a huge slice out of the physical BB market I'm sure.