Spurious charges for speaking clock 123 - mystery solved

[#1]

I recently complained about several 50p 123 calls I was charged for but didn't make from my home phone but +Net insisted someone made these calls from my home and refused to investigate further. Thankfully I am a member of Which? Magazine and in their latest issue they reported that BT Open Reach, after a lot of complaints, had finally admitted that their engineers routinely call 123 to test the line they are working on, AT OUR EXPENSE ! Shame on you BT for ripping us off as usual and +Net for allowing me to get ripped off !! I will now demand a refund from +Net as they are responsible for supplying my Phone Line which is owned by BT. Watch this space for +Net's response ..

[#2]

Hi surfclub, welcome to the forums.
I've responded to the ticket on your account and I've issued a refund on this occasion for the 50p charge incurred for a call to 123 back in November.
I'm not sure if I'm missing something here, but there was only 1 call to this number when I searched back through all the call history and there were no faults raised on your line around the time of this call charge, so I don't quite understand why an engineer would be using your line while investigating problems with someone else's line 

[#3]

Harry,
Its a bad practice used in the past by BT engineers and seems to be still in use by some sub contractors.  They dial 123 on a line, looking for a spare line...
Kevin