I made a purchase of 1.6 th/s for 224 usd on hashflare at 28th nov 2017 and my purchase was pending i raised multiple tickets on support i did not got any reply from support till now its 5 days nearly is hashflare is a scam ?
Are you sure that your bitcoin transaction is confirmed?
Maybe it's because it hasn't got enough confirmations yet or is still unconfirmed, that is why it is showing up as pending. Just double check that. If it's not, then it's definitely something going on with hashflare.
I don't consider them to be trustworthy. But it's too early to tell if they are an outright scam or not, but there is a high likelihood that in the end they will experience issues paying out investors, even if they do credit you with the hashrate.