Yes. I had a leccie round to my shop once and he was trying to fix the aircon/heating vents in the walls. He played around with them for 2 hours, then said he'd need to get the right parts. Two weeks later, no parts, just a bill for �65. When I queried the bill, the lady on the phone said it was for his time. I protested and so she said it was for investigative work (time spent trying to find the parts - that couldn't actually be found). I asked if he was a Private Detective or an electrician. Eventually, she agreed to write off the bill, for the sake of "goodwill". I never got the heaters fixed.