no notice for divorce

1. Appear on date fixed and take Copy of Suit in all three cases. Plead before Court to give time to file replies and arrange for and Advocate. Court generalyy grant such requests.
2. DV Case is prime facie established by filing direct Complaint before MM or takign help of NGO / Service Provider and or PO (area). If she has filed onse such case then follow above para 1 suggestion and contest the prime facie allegations and leading evidences only you can prove it to be false (means dismissed on merits).
Rgds.

in a civil case you can appear at any stage either personally or thru., an advocate.  If you are placed ex-parte then you will have to file an application to set aside the same.  You can show the reason that non service of summons to you.

Court will not ask your  how come you know about the case.  If you dont want divorce you can take the benefit of the evidence in DV act otherwise keep quiet.

before appearing the case, you and your lawyer, inspect the file - whole matter will be clear to you. it is your right under cpc therefore avail it. you can inspect at any working day, with a minimum fees of rs 10/-