SCS Construction, not satisfied with their service

Unprofessional management. Quotes are incorrect. On the day the site is visited, they promise to do the job a certain way and then afterwards they say that it was not included in the quote and you have to pay extra if you still want to it to be done. They threaten to not carry on with a job if a progress payment is not paid immediately, even if the work has not progressed. They also threaten to leave rubble on pavement if they do not get their way. They find excuses not to do certain parts of the job, even though they did quote on it. They leave the site, leaving the pavement messy and full of sand. They do not leave a site foreman on site as promissed. People working for them are dangerous, as recorded on CCTV camera.