I don’t know if this story is true or not, but I think you are being fooled by your friend, better to ask him what happen because he might know the man behind it. Well, its pretty obvious that you trust your friend much so I think that’s amount of taking too much risk, now you can’t get your money back anymore. Always do research before you put big money, especially with bitcoin always choose top exchanges.

Looks like another scam site that gives you free 0.004BTC for signing its seems familiar. Could be this website force you to install their browser extension?  If yes and you install their software then your account had been compromised or hack, that's why you lost your BTC instantly.

BTC has accelerated much faster than my model assumptions. I now predict Bitcoin at $4 million by the end of 2020.

Max. uplink for ADSL I've seen was 2Mbps, that would be enough for 3 rigs mining MTP, but usually uplink is 1Mbps and that is not, cos at peaks I've noticed that 1x 6card rig may spike up to 400Kbps of bandwidth. Other algos I mine take at least 5x less avg. bandwidth.