Lack of responsibility towards tax paying residents!

I live in Plumstead on Churchill Road. I have written several emails to all the various departments about the high volume of traffic, speeding, drag racing, eighteen wheel trucks and delivery/ service trucks that are going down Churchill Road and using it to get to either the M5 highway or to Southfield. We have seen two speed bumps placed at the top of Churchill Road but when I ask for speed bumps for the lower side of Churchill Road before the circle I get rude emails with literally every possible excuse in the book. We have a junior school and high school roughly 100m from our house, children walking home, people running or walking their dogs. We have had a car hit he curb and tree due to excessive speeding to flip itself onto its roof and another car with a drunk driver crash into our driveway. Yet nothing is ever done to stop or resolve these matters! I had a police officer agree to put up a speed detector and I spoke to him snd he said he agreed with what I have complained about and asked to have done yet I get excuses! I have suggested more speed bumps, a fixed camera box, pedestrian crossings but cars wouldn’t stop anyway! What needs to happen for these issues to be resolved and addressed, a child, person or animal needs to be killed by a speeding car, all because I’m told that Churchill Road is wide enough for all these offenses to go unaddressed! I gave petitions from around the neighborhood on at least two occasions yet nothing has happened or changed!