Unauthorised work to steep banks

Howe Lane was been closed since Friday 19th Jan 2024 for work on a burst pipe. A resident has taken it upon himself to 'sort out' the banks, passing bays and widen the road, using his digger, excavating soil, making the very high bank unstable, containing many trees, copious loose soil, blocking access for water to run into the drains and rendering the roads practically impassable with a very thick layer of compacted soil ontop of it, soon to turn to river of mud with inevitable rain. This needs urgent attention please. Firstly it should not be allowed to happen and I believe this zone is a protected area. I do understand his frustration at no action from the council on these matters previously, eg. blocked drains, and ditches, no maintenance, need I go on. Many thanks