A nightmare from hell

On my last night at the property, my friend left me alone and I went out and have no recollection of the events that occurred. I contacted the property for video footage of my entry back as I believe it is possible that I was drugged/***ually assaulted. Initially the property care taker said I returned alone to the property and unlocked for myself, later he changed the story and stated that he actually opened for me thereafter I went to my room. All I requested from the property is footage so I can see the events as the occurred as I do not remember anything. They have informed me that they will not be releasing footage as it is unavailable even though they stated that it would be possible to retrieve it when I called. I smell foul play and will definitely be opening a case because if they as an organisation have nothing to hide, why are they refusing to provide video footage?