I explained exactly what the problem was before the guy came round to make sure that no one's time or money was wasted, specifically mine. I also told the guy to bring a specific tool set as i knew how to fix the problem but just didn't have the correct tools. The guy turned up with no tools nor clue how to fix it and tried to charge me an outrageous consultancy fee for doing nothing. A very small and easily fixable problem turned into a huge problem and after paying the consultancy fee they turned around and told me it couldn't be fixed. I then had to go through quite an ordeal to get my money back. Absolute cowboys!