I used to be a a Foreman for a large Contractor that wired many HD's across the Country and I am not surprised to see that at all. They would send me out of town with only a cell phone and credit card. They would run an ad in the local paper and have me hire 10 "electricians" in the first week. You would have to hire just about anyone because during those times all the "good help" was already working.
It's tough to wire a 130,000 sq ft box with new, mostly inexperienced help and watch every part of the installation. So I am not suprised to that at all.
One example: there are 10 general use GFCI outlets on the front of the store. I had a new employee install the receptacles, as the wire was already pulled. Each 2 gang WP box was to hold one GFCI and one Duplex Decora receptacle and the wiring went on downstream to the next box and so on. At the first box this meat head connected the incoming wires to the GFCI and the outgoing wires to the Decora receptacle...never making any connection between them. He did this in all ten boxes:roll:
Another: The lighting fixtures located by the registers are all ready hung right where they need to go. I have a guy run the relock wiring down the rows and make the connections to the fixtures (easy job)...not...
I come back an hour later and this ding dong is taking down the light fixtures and moving them because the relock was not long enough to reach the fixtures as they were instead of just using another short piece of relock.
So I am not suprised at whatever you may find in one of those stores considering what I have experienced in the past. It does not make it right by any means.