Hash power buying

If you get hash from miningrigrentals.com

it is a waste of time and money. I have tried and when the difficulty of a block becomes low the workers stop and apply hash to contracts on nicehash that pay better. So say you buy 10G/H for 6 hours but every time you would have the best chance to find a block those workers are elsewhere. The support just makes excuses and overlooks the lapse in service with returns to the account. I am not affiliated with nicehash i am just posting independent results. Here is my raven to show progress only 1 block was found using miningrigrentals. https://solo-rvn.2miners.com/account/RQurQm6nAZPezWTE1pWmaQTRi2XqyoDCgf