He asked how much i want to start with, i said $500 and he said $500 is too small that i should make it $1000.
Because if you made say 20% on your 500 and were to give him 10% of the profit, he'd earn a whopping 10 bucks in 2 months. He wanted you to invest more not because it allows you to make money and $500 not. It allowed him to make more money and you were to take all the risk. I'm fairly sure he asks everybody to double their investment. You started low (500), but if you said 10k, he'd ask you to invest 20.
many people scored the company above 4.5/5, i came here to search for name whether it will be mentioned in any scam but i didnt get any negative information about them,

Not these people...
Fake reviews are cheap.
You are right boss, as at the time i started with them there were many who rated them high but weeks after i have already fell to their scam i started reading very few bad reviews about them, in fact that is what really confirmed my initial feeling that they are scam and that is why i decided to place a withdrawal to confirm. One more thing is that for every 1 bad review they get, they will have 5,6,7 or more favorable reviews that will make you think the bad reviews are minimal, they have continued doing that every day till this moment. I believe they use multiple accounts as syndicate to review themself.