Witzy review about company Mogford Prescott Ltd

DO NOT USE THIS COMPANY. I have just received an invoice for work carried out 6 months ago in April 2018 (incomplete job and poor workmanship) for £400. I had a new mortise lock fitted to the front garden gate, a couple of internal locks and a cupboard door realigned. The work took 3 hours 20minutes in total. None of the locks fitted work properly and we had to call the carpenter back once... They still don't work properly, and despite him saying he would return to finish the job, he didn't. When asking for a quote, he was very vague. The best we could get out of him was that he charged £30 per hour and the mortise lock was £50..... I was shocked to say the least on receipt of the bill. I have just called the company to query the invoice and been met with their extremely rude, arrogant and obnoxious accounts guy, Edwin. I was so shocked by the way he communicated with me I had to hang up in the end. We have had problems with invoicing, quotes and communications with this company previously but had hoped it was a one off..... I am worried about how we will resolve this issue as Edwin seems incapable of holding a decent conversation... Approach with caution!