Threatening customer who complains about poor work

On Friday April 1, 2016 an electrician from AJ Fast Electrical arrived to inspect and repair lightning damaged main switch in DB box. During installation of a new switch my pre-paid meter was damaged, disconnected and or bypassed. COJ immediately called when the meter reported \tampering\". I phoned AJ Fast Electrical the following day to inquire as to the state of my pre-paid meter. The staff were extremely rude, and threatened my with \"We know where you live\". I reported this to SAPS immediately. I tried twice to speak to them, offering to pay their bill as soon as they fix my pre-paid meter, with more or less the same reaction every time. Do NOT allow anyone from AJ Electrical on to your property. "