www.cloudmining.website seems to be working. I invested a little to buy 10 Ghs in 2016. But, I was disappointed to see that their minimum withdrawal limit was 0.01 BTC. Recently, they have lowered it to 0.001 BTC. And, today I have got my payment...

https://blockchain.info/tx/30055c84ce01de2d61295a0a1e8f2983141a16f782b9a189cdc2153f5f533071