Oh did you hit a "hot button" (and that's a pun!) Freezables-hoo boy! Instead of protecting the freezables when needed, which is very doable with proper planning, the management simply embargoed them. The worst thing a company can do to a customer is tell them "no!" When I was a combo guy, working the dock on the weekend and driving on Fridays and Mondays, we would gather all the freezables onto one or more trailers when the weather got super-cold, and put those trailers in the shop where it was 60 degrees. Just before dispatch time on Monday morning, we would pull those trailers to the dock, load the freezables right on the tail of the city units and instruct the driver to deliver them NOW! Worked like a charm. Outbound stuff had protective thermal blankets that worked well. Same deal-put it in the shop until "go-time" then blanket it and ship it, usually to a warmer climate. Worked quite well.
Too many of the front-line supervisors didn't know freight, and that wasn't their focus. Numbers were their stock-in-trade, and some of them didn't know numbers very well either.
I was fortunate- my managers knew that I knew what to do, so they gave me my paperwork and otherwise didn't disturb me unless they needed to convey information to me. Reality is, they frequently called me to ask me how to handle a situation involving another driver or his customer.
As for blaming others, that was the "order of the day". Dock blamed the city, city blamed the dock, they both blamed linehaul and linehaul blamed them. Why??? The higher-ups were so on the front-line peoples' tails about numbers, numbers, numbers. The higher-ups needed to think about the whole equation, not compartmentalizing it by supervisor/manager. Sadly, that typically isn't what happened.