For the record, most “former dis-gruntled employee” complaints are ignored. I have been in this same situation myself, and was told that by the Agency I filed the formal complaint with. They did do a “Courtesy Inspection” but gave them 3 weeks notice, so they could “get ready” i.e. cover it up.
“It always amazes me that people wait until AFTER they leave a company to complain about it.”
With all due respect, in toxic environments people know that if they complain they’re going to likely be harassed or asked to leave. So usually it’s not until they make the decision to leave that they feel able to comment.