Dartmouth Group's choice of vendors to do the work...

Dartmouth Group's choice of vendors to do the work at our townhouse condos has been uniformly disappointing. Currently there is a crew of painters doing virtually no prep work and slapping paint onto unwashed and unprepped surfaces. The same thing happened a few years ago and the paint is already chipping and mildewing. If Dartmouth Group checks the work done by their vendors, I've never been aware of it. If the DG has, why do they accept substandard work? Of course the substandard exterior work affects the curb appeal and overall value of the condos. I am baffled that DG makes no attempt to do a better job.