CA not providing NOC what shall I can do?

Give him a formal request letter via email or via registered post asking him to provide all the necessary clearance as required by next 30 days or so. Keep all the conversation of money demanded as a proof for further evidence.

If the formal request doesn't not yield any positive results you can file a complaint against the CA for carrying our Unethical practices with ICAI which can have a huge damage to the carrier and future prospects of CA if all claims are proved.

It is better for everyone to act ethically.

Moreover, As per Companies Act, 2013 you can file Adt 2 but it is a lengthy process. it will take 2 to 3 months. As Asha mam said one must have ethical practices. you must have valid evidence to prove his/her malpractice.