service Jacuzzi J-400 series bath tub

I am seeking an experienced Jacuzzi/spa technician to inspect, service and recommission an outdoor Jacuzzi spa located in Northbridge NSW The spa appears to be a Jacuzzi J-400 Series model. It has not been used for approximately three years, although it is still operational. I have never used it since taking over the property and would also like someone to explain how to operate and maintain it correctly. The required work includes: * Inspecting the overall condition of the spa * Checking the pumps, jets, heater, filtration system and control panel * Checking for leaks, faults or deteriorated components * Cleaning and sanitising the spa and internal pipework * Inspecting and cleaning or replacing the filters if required * Testing the water-heating and circulation systems * Advising whether any repairs or replacement parts are required * Refilling and balancing the water, if appropriate * Showing me how to operate the controls, heating, jets and filtration cycles * Explaining basic ongoing maintenance, water treatment and how to drain and refill the spa Please provide details of your experience servicing Jacuzzi spas, your availability and your estimated service charge. Any replacement parts or substantial repair work should be identified and quoted separately before proceeding. Photos of the Jacuzzi can be provided.