How to unfreeze current account ?

Hello, Business Background : 1. I am running website for online money transfer services, where customers can signup and after KYC verification I will allowed them to send money to my current bank account. 2. And than same amount will be updated to their wallet by me (Virtual account) than they can upload excel file of beneficiaries to transfer money further to their customers. 3. I charged them on every transaction about Rs.3 upto Rs 1000 and so on. 4. I doing this by using third party private bank ( Provider) for "Money Transfer API" or "Payout Service" and they are authorised by RBI. 5. I am also authorised to use their money transfer services as per agreement. Legal Issue : One of my customer misused our money transfer services and F.I.R registered against his firm u/s 420 and police Investigation Officer send directions to my third party "Private Bank" to take necessary action. My Issue : Now my third party "Private Bank" after receiving instructions from IO blocked my current account without any giving notice. Problem : All of my other customers money stuck and my business reputation ruined because of account blocked and bank replied saying that you need NOC from police than we will unfreeze your account. My firm registered in "X" state and my customer firm registered in "Y"state and F.I.R registered against my one customer in "Z" state. Q.1 Where I have to appeal ( X or Y or Z) against account freeze ? Q.2 Which court ? Q.3 Any case law related to my situation ? Q.4 Can IO unfreeze my account without court help ? Q.5 Writ petition in High court only way ? Q.6 Can bank without any notice freeze account ? Q.7 Any suggestions or advice ? Note : Balance in freeze account is very less than misused money so lien on account will not work in my case. Thanks in advance