Olx India — People who are doing number of frauds

Someone contacted me on olx and said i want to buy your tv i said okay he said i will come today at 1 so he called and said i will pay and come i am doing it by swipe machine so i sent him 1 rupees and got 2 rupees then i sent him 4500 he said transaction failed and then he took more 500 and said i could not transfer its my boss card so he said i will come by 2 and give you cash and but now phone is switched off