you did a big mistake by withdrawing your case. if you have to take divorce then it does not matter they file maintenance case or not. they will demand maintenance irrespective of the fact whether you withdraw your application or not.
anyways, the maintenance case they have filed against you is to be heard on 9th July. the judge would most probably order an interim maintenance until the application is finally decided based on your current financial status your earnings and the financial status of your wife, whether she earns or not, etc.
it does not matter whether you have been served notice or not. they must have intentionally done something so that you don't get the notice and they will serve you directly the maintenance order.
therefore, try to be present at the hearing, if not send your lawyer to forcefully argue your case.
file a divorce case and mention in it that you were coerced into withdrawing the case.
also, file a case for FITR quashing in the HC.