Tree on council land fell and damaged my wall England

Advice would be appreciated. On November 18 a tree which was top heavy with ivy, fell in the night onto the wall at the top of my driveway. It damaged my wall. The next day the council came and removed the tree. The workmen told me to put on a claim to the council which I did. Today I have received an email saying the council will not make an offer compensation and liability is repudiated. Could someone please advice me where I stand and my next steps please. Thankyou