Fair response from estate agent or not

Little background: we moved out of our 1 bed flat 8 weeks ago and heard nothing from the estate agents. I politely asked about my deposit and got this in response. Some points are fair but some were there when we moved in (we’ve got pictures as proof) and I’m being made to feel I’ve left the flat a hovel in Beirut. And they want me to come up with a figure for reasonable amount on top of the deposit. All this in response to a quick email asking about my deposit after hearing nothing for 2 months. Is he having me on or is this fair and common practice