Gta (payment to truck owners)

Hello ,

I have a GTA under which I hire trucks from owners. I issue the bill for the supply of service and I receive payment from the recipient in the name of my GTA.

The issue that arises is the truck owner demands payment in cash.

How do I make payment to the truck owner and record it as an expense in my books of accounts as without showing the payment to the truck owner , the entire freight is booked as profit in my books.

please advice.

Thanks