Happened to me in 1985.  Racked up a $350 phone bill in one month using my Mitey Mo 300 bps modem.  Parents took the modem for a month.  Then I fixed the problem by finding some long distance company&#x27;s calling card access numbers (Sprint, MCI) and had the Commodore 64 my BBS ran on hack them out every night between 2 am and 6 am.  I would get about a dozen codes per night.