Is it possible to file four cases at one person

All the cases in all the Courts are false from the perspective of one party or the other. It is because the parties can not agree to what the truth is that they go to Court so that court may decide what is the truth.

So, you have to accept this and then defend yourself best as you can. There is no limitation on number of cases filed on a person, if the case can be so made out prima facie.

Shall i seek permission to give one date for hearing all the cases that she filed on me in one court????

You filed several cases against her and she filed several cases against you.  Then what is wrong?  Yes, if all the cases are filed in the same court, you can request the court to give the same date and your request may be considered keeping in view of the diary of the court and stage of the case.

She is using all the weapons she is entitled by law. As stated before, you can request the judge to tag all four cases & request to put them all on one date for hearing.

Fight the cases on merit by the help of a learned local advocate.

Any party can file any number of cases against opponent there is no legal bar in it. so you have nothing to do against it save and except  to defend the same by any prudent lawyer. LIFE IS A CHALLENGE YOU SHALL HAVE TO FACE IT.. Secondly you may pray before the court to take up all the cases at a time for the purpose of better adjudication and to save the valuable time of the court.

You have posted the same query in the experts section too which was properly addressed by experts there.   Now as an after thought she is on the spree of filing umpteen number of cases against you using the gender biased laws in her favor.  You can put up a stiff challenge on the basis of merits in your side.