Strangely, the Act doesn’t define what harassment is, except to say it is what the person carrying out the action knows or ought to know is harassment. So, your state of knowing is what counts. Whether or not someone had told you not to contact woman B may well be a factor a court would take into account, but it is not the most important thing. To convict you of harassment, the prosecution must prove you knew or ought to have known that what you were doing would alarm or distress her.

I did have someone trying to accuse me of harassment. Woman A told me not to contact woman B at all and she said if I contacted woman B, she would involve the police. However, by that date, woman B had been pleased to see me and hear from me. She was not at all distressed by my contacting and if she minded, she should have told me not to contact her. She did not say that. Woman A tried to speak for her. It was quite confusing and at the end of the day, I could only conclude that woman A got everything wrong.