I Found Another One Today

I found another one today.
A spot of darkness on the wall
no more than an inch wide
pulsing silently in time with my heartbeat.

That's three now.

I think they're portals
gateways or something.
One of my pencils slid in easily
then ripped out of my hand
disappearing into the darkness.

I wasn't sure if I'd imagined it or not,
but I could've sworn after it was gone
I heard the sound of lips smacking.

I'm starting to wonder
if they all go somewhere different
or if one day they'll morph into one giant chasm into nothingness.

Who do you call to get rid of spontaneous interdimensional gateways?
Would that be under in the yellow pages under
Supernatural Removal Services?
Or maybe the Eldritch Travel Agency?