Send an email to the court and advise them of what has happened and seek an adjournment to a later date so you can get counsel.
What do you mean more than an AVO. What else are you defending?
Show them the emails you have received and let them know what the other lawyer has done
Most firms do not have whatsapp or Skype as their primary contact
You have to call them on the land line and make arrangements for alternatives.
Here are some firms
But you have to call them on a landline
I hope this all assists and you can finalise this matter
But get more time form the court