Digging trenches in public streets and then not closing it properly!

Your team dug a trench in Middelton Street, Reitz, near the crossing with Davel Street and did NOT close it properly. There were NO markings or warning signs present, only the cables on the sidewalk to warn motorists! This afternoon, I was driving there and had to brake very harshly to avoid damage to the car and still got quite a jarring experience even though I was driving less than 40km/h to begin with! The trench is inconspicuous if you approach it from Davel Street and therefore VERY dangerous... My dad also complained about a similar experience in Artie Street, where ambulances often drive at great speed on their way to the hospital. Will you please see that your team CLOSE the trenches and repair the tarmac surface as your competitor does?!