It’s becoming nearly impossible to fix map problems with google. I have a bunch of weird one way and foot only pathways near me in London and the routing is always awful for delivery drivers. Telling them to come the wrong way down a street etc. despite having a very good history of submissions nothing is ever fixed in the routing despite opening dozens of reports.
Most commerical delivery drivers will use an OpenStreetMap based routing application, so make sure to see if these things are in OSM and if you can fix them.