Honeywell Pro TH4110D thermostat not working. Pilot light is on but no heat

Leona requested 3 quotes from Heating Professionals in Hawthorn

The LED panel of the thermostat lights when switched to "heat" and the pilot light is also on, but no heat is generated.

DISCONNECTION OF HEATING.
DISCONNECTION OF HEATING.

DISCONNECT VULCAN 15 YEARS OLD OUTDOOR UNIT
DISCONNECT VULCAN 15 YEARS OLD OUTDOOR UNIT

Vulcan central heating service
Vulcan heater unit service (if necessary), duct clean and repair (definitely)

Repair fan in gas ducted heating system
the fan on my heating system will not go off - it stays on after the burner...