I was tricked by linqminers.com. I purchased a Bitcoin ASIC miner from them back in October, with the promises that it would be delivered before the end of October... It is now December and nothing has been shipped to me. At first they would explain the delay in shipping with the worsening pandemic in the world, but they would still never send me a tracking number, despite me paying extra for express shipping with insurance and tracking. When I wanted a refund, because the delivery was taking too long and I was anxious that something was wrong, they would just say that "all sales are final" and that no refunds can be issued. Shortly after that email, they would stop replying to my emails altogether. That happened a week ago, since then I have reported them to the Police, and any online institution I can find. Please do your research before you purchase something online. I didn't do my research and look where it has landed me.