SCMP - page 3: "Business travel starts to suffer: CALLS MOUNT FOR ANSWERS ON VISA POLICY" -
AmCham, British Chamber of Commerce + Australian Chamber of Commerce complaining now and waiting for answers from Beijing.
Same page SCMP - "Travellers despair at conflicting versions of travel restrictions"
"Other chambers, including the European and British chambers, are now collecting information from their members and will file them to the Beiijing authorities in their fight to have the restrictions lifted"
Hopefully they will try to approach directly the responsible ministry - to file at the so-called complaints department takes months to get an answer, normally.