There is such a thing as an esoteric tech support hotline, though it's rarely formalized and is normally done via the Good Ol' Pagans' Network rather than through a business or anything like that.
Tier 1a is that random person who looks like they know something about magic. There's usually one in every workplace, or in every neighborhood. They may not be a big wheel in the pagan or magical community, but people identify them as probably knowing something about magic, and if Weird Shit goes down that normal stuff doesn't work on, this is the person you contact. This can be face-to-face or online, of course.
Tier 1b is sort of like Tier 1a, except the people needing magical tech support will refer you to other people needing same. "Oh, haunted house? Ask Miss Lunatic. Yeah, can't miss her, she's the one in the black; she helped with that spooky thing that was going on."
Tier 2 is when randoms from the magical/pagan community show up for magical tech support, including Tier 1 people.
Tier 3 provides support for all below tiers and its own members.
Having something published in the field usually means at least Tier 2. Those who are given a vocation to go seek out problems to fix them are not really designed to fit in this model.