I have an unwanted spirit entity that showed up a few months ago, one actually capable of physical phenomena (flashes of lights, knocking things over, poking me...).

I am already well versed in the lesser banishing rituals of the pentagram and hexagram and have tried using them.

This thing has withstood everything I have thrown at it. I have tried Purifying and Consecrating my entire apartment, drawing banishing pentagrams directly against it, invoking the divine authority of the tetragrammaton and commanding it to leave. All have failed. They would work temporarily at first and then not at all.

Does anyone here have a stronger ritual formula than the LBRP and LBRH that could be used? Specifically I would like something that can banish any kind of spirit that I deem unwanted regardless if it is Angel, Demon, Ghost, Elemental, ect.