This reads like a case of real estate mobbing, you could hire someone with the right skill base to gather evidence of covert harassment attempts, or write a legal letter asking for an acknowledgment then a halting of the troublesome behavior, or be subjected to further actions.
Or if the Occult aspects you are detecting are genuine, run as fast as you can, as sometimes **** can happen and it's not worth all the weird **** they produce covertly in order for you to seem ill or an asshole.