Pandas

I suspect there are demonic pandas hiding in my cellar. I hear strange chewing noises late at night coming up through the vents. It's not the landlady at her fridge, gnawing on chickenbones after midnight - no, something more feral and unearthly is at work here. They're not chewing on bamboo & ferns, but the tattered souls of former tenants. Bloodshot goggle eyes peer out from the dark recesses of the stairwell when I go out to check the mail. The postman knows. He doesn't come inside anymore, leaves my packages on the stoop & hastens away. And those rumbling noises, like hell's empty stomach. Like a great furnace crying out for fossil fuel. There are jagged teethmarks in the wooden banister & everyday they seem to rise a little higher. Who do I call about this - an exterminator or an exorcist?