Oyo - Service not provided

I have booked from oyo before the service was good but recently i have expericed very bad service from them i have experienced this issue since my last * bookings where i make bookings from oyo app and when i go to hotel for checkin they deny as they state that they dont have any tie-up with oyo this has been frustrating and when i call the customer service they dont give any option and state that you will get your refund i was not booking my reservation to get refund this has been a major issue since my last *-* reservation where in i pay in advance for my reservation on oyo app but at the time of checkin the hotel deny stating they dont have any tie-up this is a scam and i have faced mental harrasment as i have to go theough call with oyo and to argue with them is very stressful in the end i dont even get resolution and they left their guest stranded