I would seriously consider court proceedings to recover the cost of restoring the fence to the state it was before the council removed it.
You can do this quite easily in the Small Claims Court and it can all be done online.
In the first instance, write to the Chief Exec of your Council (or appropriate senior official) telling them you want your fence restored..... give them 14 days to reply. If you don't get satisfaction, write again, head it 'Notice of Intent' and tell them you will be issuing a summons if they do not comply with your request.
In the meantime - your local paper will love this story. And tell your MP as well.
Good luck!