Apparently there is another side of them one cannot see and this is about builders been able to talk down customers, a builder told me.
Never ever managed to get somebody professional from any of those sites, those builders are extremely aggressive even swearing by text, missing appointments or/and charging the earth saying if they are on the site then it is because they are good. If they are so good, would they be on those sites, I very much doubt. I am a woman off 69 years on my own so I have to be careful who I let into my property and frankly I have found most of them so bad manners I would not be able to trust them.