GST USER NAME Needed But Accountant not provide me !

If your mail ID and mobile no are registered in GST portal you can proceed with forget User ID and then forget password. If your mail ID and mobile are not registered contact your jurisdiction office and write a letter to update the new mail ID and mobile no in the GST portal. After this you can retrieve User ID and Password

You just approach with your jurisdiction officer

Any other method ?
because tax officer charge high amount of fee 10000rs . for the process !

Make complaint to higher authorities

Himanshu ki
it's duty of your tax officer to help you in this . else the option left with you to file complaint against him.