:ApplaudOSG page 160, section 8.4I suggest you go back to the clients with your OSG and show him this section. Also arm the client with the tech help line numbers for NIC, ELECSA and NAPIT and invite him to call any of them and they will back you up.
Tell the client that you bear him no ill feeling over the matter but that you intend to bill the fitter 2 or 3 hours for fitting the appliances.
Send your bill to the fitter with a photcopy of the OSG section and a letter explaining that his "electrician" was completely wrong. Invite him to call any of the tech lines at his lesuire. Ask him to settle in 7 days.
It is vital to make sure the client understands you were quite right as they were already a client of yours and you would like to keep it that way (you could point this out to the fitter - that he has potentially scuppered your relationship with a good client).
Oh yes I could be doing this....maybe sending the bill direct to Optiplan