Sh.Kaustubh Karandikar Ji,
I agree with Sh.Abhishek Tripathi, Sir to the extent of, " More fact along NN(s). 11, 12 and 13/2017 (Rate) will solve the query."
The issue involved is of classification. After 1.2.19, there is a crystal clear distinction between the categories of, 'Passengers Transport Service' and 'Renting of Motor Vehicles'.In this scenario, ZYZ has rented bus to the one person i.e. Company (PQR Pvt. Ltd.) and not to the employees. XYZ has contract with the company and not with the employees. XYZ has nothing to do with the employees. The bus has been rented out with operator and cost of fuel is also included (my presumption from the query).
Hence this is not Passenger Transportation Service. This is rental service of transport vehicle with operator and classified under SAC 9966 and if without operator SAC 9973 will be applicable. See Notification No.11/17-CT(R) dated 28.6.17 as amended (Serial No.10(i) and 10(iii). This service is not classified under SAC 9964. Service has been provided by Prop. to body corporate. So there is not an iota of doubt about this bus service falling under RCM.
Pl Also go through this decision of AAR . This may help you in arriving at correct and concrete decision Applicant 2020 (7) TMI 410 - AUTHORITY FOR ADVANCE RULING, ANDHRA PRADESH :ANDHRA PRADESH STATE ROAD TRANSPORT CORPORATION