I gave them $800 supposedly for mining Bitcoin. They tried to sell me a bunch of other stuff, then also gave me some mining power for a few different mostly-worthless coins instead of Bitcoin, which no mining power ever materialized --and no Bitcoin. Kept saying that Bitcoin was broken, or forthcoming, or being upgraded, or any number of nonsense excuses for not giving me what I paid for.
3 years not a single cent has materialized
AVOID