AO Smith — No service provided after AMC

I have purchased the AO smith water purifier Z8 and also AMC contract on 16th May 2022 valid till 15th May 2024 for an amount 10750/-. After the replacement of filters and membrane suddenly the water purifier started giving insects in water. Then I Registered the complaint on 15th August 2022 and surprisingly for 13 days no response was there from the company. Then after regular follow-up they provided a technician number and he also stopped answering the calls . Then he said he will come in an hour and he is on the way. But for 4-5 days he kept on lying. Please take a strict action against this fraud company as they are cheating everyone by doing false commitments and taking money without any intentions of providing the service.