The legislation is quite clear 1 A person is guilty of an offence if he a sends by means of a public electronic communications network a message or other matter that is grossly offensive or of an indecent obscene or menacing character or b causes any such message or matter to be so sent 2 A person is guilty of an offence if for the purpose of causing annoyance inconvenience or needless anxiety to another he a sends by means of a public electronic communications network a message that he knows to be false b causes such a message to be sent or c persistently makes use of a public electronic communications network 3 A person guilty of an offence under this section shall be liable on summary conviction to imprisonment for a term not exceeding six months or to a fine not exceeding level 5 on the standard scale or to both No mention of single v multiple communications or 12 weeks maximum