Mine isn't as much a complaint but a heads up. We got 3 bids to have our unfinished basement finished.
Basic Basement was the lowest bid. We got pretty good results but a few observations. One, the job started on March 5 and ended on April 30 but during this span there were actual workers at our house maybe 10 days in total... Granted some time was taken up with township inspections but the job should never have taken this long.
Regarding workers... There is a different team for each step. The framing team was very good. They kept the place spotless, were efficient and handled our curious 3-year old very well (Rodrigo was especially nice).
The electrician was mediocre at best. I'm not an electrician and took his lead on where to place recessed lights which left a lot of dim areas. The Sheetrock team, well they spoke no English. My wife actually had to write a note to them in Spanish in order to communicate.
Now this wasn't especially bad but we had no idea when they left one day if/when they'd be back the next day. Overall we were happy for the most part but their inflexibility to tailor to your needs (and lack of electrician knowledge of light placcement) require some additional after work.
Monetary Loss: $10000.