Oh chickory, I love the idea of putting the wind up this bully boy.
Go for it FFC, and lay it on with a trowel....nice and thick.
We had to get out of a house after only 2 months, because of mould appearing on walls, on the backs of doors and practically enveloping the bathroom....and our RE agent and landlord waffled on about broken leases, and compensation etc, till I actually called the health department and local council about it.
RE agent went into shock when the Health inspector marched into the office and asked for the key to do an inspection, and mentioned we were instructing a solicitor, as our furniture and our health had been affected.
The cheque for the bond money and rent paid in advance, was delivered later that same day.
Your husband could tell this loudmouth that you are instructing a lawyer and the health dept about the mould, and that you will be seeking damages for problems with your furniture and health.
Bet you get the money back fast.
God bless