Oyo Rooms — Entry denied at the booked premises without any cause from my side

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Oyo rooms

I bokked a Hotel (Hotel tejas) in Haridwar, near Patanjali university.. I was requested to transfer booking to another nearby hotel, HOTEL SHIVAY INTERNATIONAL.. When I reached I was denied to checked in by Manager.. When I talked to customer executive, he without resolving issue cut my call.. Now they are not reachable.. I am having my exams (UK PCS) tomorrow...Please help
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Booking I'd F58D6360