These shows always have to balance providing something believeable, with providing good tv, and I think they struck the balancew about right.
The 'electricity' guy was just a sad case - he refused to have his meter replaced, and when he queried his four-figure account, the complaints team lady said that someone had been ringing up giving them meter readings!
The retired Rabi was just inreasonable, and did nothing to destroy the stereotype about old Jews being barking moaners.
The Scouse bore was just on some sad ego trip - referring to people 'hearing from his legal team' and relishing his argument to his girlfriend who looked singularly unimpressed.
Shan't bother watching again - I have worked in BT accounts - the real thing was bad enough!