With reference to the trenches that are up to 2m deep that have been left open for more than four years in Radio Uitkyk following either water and sanitation works or laying of cables, what steps will her department take in response to the repeated concerns raised by residents to ensure that (a) the current trenches are filled in and streets paved to prevent accidents happening, (b) once work is carried out by contractors of her department, wayleaves are restored immediately and not left for years to come and (c) contractors are monitored to ensure that work is carried out timeously and to a high standard?