Is Watermine a Scam? Cryptocurrency Investment Mining Platform

I invested $250 with "Watermine io Investment" and when I attempt to withdraw the money have earned to my Coinbase account, it never arrived. It has been 7 days now and there is still no money in my account. I sent many emails to their customer service but have not gotten a single response. Has anyone ever gotten a response from their support in regards to withdrawals? Please share your personal experience in a comment below.