Wife and father in law have filed complaints in different CAW

Hi, My wife was having an affair with her ex boyfriend, I came to know about it and left home as I was very depressed due to this episode, I have whats app screen shots of messages exchanged between them, but as she used to delete messages very quickly and even for short chats, I don't have anything obscene being exchanged, but there is clear conversations about me and my whereabouts , and their planning to meet. We used to stay in delhi away from my parents, I came back to my parents home after this incident. my in laws threatened us to file false cases, now my wife has launched a CAW complaint in Malviya Nagar cell, I have gone to one meetings, and due to urgency in office had to miss second one. Yesterday I received another complaint in Faridabad CAW, which is filed by my father in law. Can there be two complaints in two CAWs like this, and this notice reached me one day late so I could not appear at hearing, I have taken printout of the speed post tracking, which clearly shows delayed delivery. He has given his address of Rajasthan, marriage took place in rajasthan, but me and my wife have always stayed in delhi, she is residing in delhi right now too as she is pursuing higher studies here . i want to know if a case can be filed in Rajasthan court, as her father threatened me to drag us there to harass us, as it is very far away and we don't know anyone there, should I go to both CAWs and what should I do as notice already reached me late , should I go to CAW to get the date or wait for next notice ?