Thank you for your reply!
Well in one way, I'm lucky as me and my ex are still on speaking terms. But what if someone does not have contact or the spouse refuses just out of spite? There is no sense whatsoever in this request from Immigration.
My extension expires tomorrow, immigration has told me not to come back, but that they will call me. I have no proof that I have submitted the paperwork nor did they take the 1900 application fee.. They just told my son and me to go home. All very strange..
I have to go back in the morning again as I won't risk having them come the day after and say I'm on overstay...