Case of transportation

Sir I am an Accountant and want to know about the transportation services that the transport company is a union of tralla union and registered withGST Sir the Said transportation give the services to registered and unregistered person but the registered parties not to give us reverse charges, and call to the union to deposit the gst.Sir in case can I pay the GST @ 5% on both cases i.e registered and unregistered dealer.Thanks