Moved into a STATE of a flat 2 years ago. Water ru...

Moved into a STATE of a flat 2 years ago. Water running down the walls, black mould throughout. Bought an electric dehumidifier and scrubbed the place top to bottom. Even cleaned the carpets before I left. Now they want to keep the deposit for "issues" that don't exist or predate the tenancy but won't disclose the figure they want - they just want an "agreement" for them to get the work done at my expense? Absolutely no chance! Overpayments to them take MONTHS to return. Essential maintenence wasn't done for 2 years and on their new listing for the same property they have photos that belong to an entirely different property in the same building. AVOID!! They will not maintain properties, they will never call you back. They just want money and they don't care about their tenants in the slightest.