The Ghost Busters should have came and took care of Ghost. The Ghost had no right to come and tell Hamlet that. It's not Hamlets responsibility to do such a thing. If he was a true father then he wouldn't have told his son and filled him with such bad things.
Rejoice! The first photos of the fully assembled Ghostbusters are here: Kristen Wiig, Leslie Jones, Melissa McCarthy, and Kate McKinnon together filming in Boston. | First Set Photos Of The New "Ghostbusters" Cast