The first record of a prank phone call happened just 8 years after the telephone was invented!

A publication called The Electrical World was recently discovered and it shows the first ever record of a prank phone call. The February 2, 1884 edition published the following:

"A GRAVE JOKE ON UNDERTAKERS -- Some malicious wag at Providence R.I. Has been playing a grave practical joke on the undertakers there, by summoning them over the telephone to bring freezers, candlesticks and coffin for persons alleged to be dead. In each case the denoument was highly farcical, and the reputed corpses are now hunting in a lively manner for that telephonist."

So, yes. It only took 8 months for someone to start prank calling. Trolls truly know no limits of time or space.

(Source)