Rudra Bhairava Retreat Dirty Bathrooms and No Invoice, Refund Request

I stayed at Rudra Bhairava Retreat in Rameswaram with a group booking of six rooms for the nights of 18–19. When we arrived, the staff asked us to cancel our Booking.com reservation and book directly with them, promising a deduction of Rs. 1,000. We accepted this and paid a total of Rs. 17,300 in Indian Rupees. After check‑in, we discovered that two of the bathrooms were in a very dirty and unhygienic condition, to the extent that we could see the waste left by previous guests. This was extremely uncomfortable and unacceptable for our group. We immediately showed this to the room boy and asked him to clean it. There was only one person present who seemed to be handling both office and management duties. When we later asked for a bill for our stay, he told us that it was a new apartment and they did not have a bill book, so he could not provide an invoice. I told him that without a proper bill I did not understand how they were paying GST and that I could complain to the police and GST department if needed. He replied that we could go ahead and complain, saying they had all the documents and were not doing any crime, but still did not give us any bill. We are from Kerala and most of the people in our group are over 70 years old, so we did not have the time or energy to stay there longer and file a case. In the end, we paid the amount they asked and left the property. Considering the poor hygiene of two bathrooms, the lack of proper management and the refusal or inability to issue a bill for Rs. 17,300, I am requesting a partial refund as compensation for this experience. I also expect the hotel to ensure that bathrooms are thoroughly cleaned between guests and that proper billing in compliance with GST rules is provided to customers in the future.