as szafa said
How about Nicehash or may Miningrigrentals?
What makes you interesting to rent directly from the miners, instead of using rent platform? It was okay for miners whose leased their Hashrate to you, but they can go anytime without your permission (if you pay on the front), and you can leave 'em anytime while yo pay 'em after the service ends.
Obviously there is merit in going through non-mainstream channels like nicehash or miningrigrentals.
If you're not aware it's usually how established companies charge more as payment for the convenience and security they provide. OP is probably trying to increase profit margins. That being said, I wouldn't trust so easily when it comes to crypto transactions like this though, too much risk.