Computer Service Chennai - Laptop service scam repairing laptop motherboard with old one without replacing with a new

On **/**/****, I enquired laptop motherboard service at https://computerservicechennai.online/. Computer Service Chennai, No.** Gandhi Street, Adambakkam, Chennai-******, Phone +**-********* /***********. The next day Mr Mani Maran came and took laptop stating that new motherboard has to be replaced as the old one is damaged and the new motherboard cost Rs **** /-. After * days he said the laptop is ready. When I asked him about the old motherboard he said he will bring after * days it's in some other process. Believing his words I paid the amount. After * days I called him there is no response he hanged all my calls. I was cheated. He ripped my money off and modified the same motherboard and given to me.