Tribute Communities

We moved into the Parkridge Community (Oshawa) in late 2006 (new home). We are presently having our front porch rails & pillars replaced - rotted. Now, one of the kitchen cupboards has become "unattached" & "sunk" about 1 1/2". It appears that staples were used to attach the material & they are now visible! (Note: so far, none of the other cupboards have done this!). I have no idea how to repair this, nor the cost! It would appear the materials & work were completed poorly. We are very disappointed in Tribute, especially after hearing that newer homes are using upgraded material & installed in a professional manner!