Being billed for 1 second call to 123 Phantom call

[#1]

Dear Billing 

I have just looked at my upcoming bill from plusnet and I can see a 1 second call to 123  at a cost of 50p   this was made on the 23/04/2020  at 13.06.25.  not even time to hear the time.?

I do no use this number and never have done so would you please explain this charge.

I can see from here that I'am not the only customer complaining about this phantom call to 123 from Plusnet.

Regards  John 

[#2]

Hi @manderjc, thank you for getting in touch.

This could be due to an engineer testing at the exchange. I have credit the charge off for you.

Thank you for your patience.

[#3]

Thanks you for dealing with the charge.

John

[#4]

You're very welcome @manderjc,