My MFA is not working after changing the mobile setup.

My Authenticator app was tied to my company account. Now when I am not part of the system I removed the primary office account as my login. As soon as i did that I am not able to login to my personal account. This has my Credit Card Information and now it is not accessible. There is two part to it. I am using my outlook account for this login. The Authenticator app is able to log me in with my outlook account but immediately Azure login MFA is triggered which is tied to the old setup. It is sending me 2 digit loging but it is not reaching my mobile. Alternatively TOTP challenge is the option which is presented . This TOTP expected is 6 digit as it was before tied to a company account but now I get a TOTP which is 8 digit. Also i have this account tied up with my gmail account so when i try to login with gmail account it pushes me to outlook account. I have raised this issue but it is not getting resolved. Here again i am attaching the screenshots. This was initial data which i provided in that ticket

○ Customer/contact name: ***

○ Customer phone number: +***

○ Customer e-mail address: ***@outlook.com

○ Affected subscription ID:   ***

○ Region: Not set 

○ Country/Time-zone: India / *** / UTC +5.30 

○ Language:  English

○ Enrollment number (if applicable):

My Request

Option 1. Totally destroy this account so that I can recreate the new account. This will take care of the distruction of the card storage. I am also not able to remove the card from my outlook account as it is erroring out saying that the Azure has same card.

Option 2. Disable MFA so that I can get in and setup MFA again.

I understand that as a individual user we are not the part of the user who are generating profits so there is no support at all which i am trying for more than a month now. I am told that someone will be calling but nothing happens and a mail comes saying that the ticket is closed.

I understand that getting past the MFA may be difficult for Microsoft but you can still distroy the account with all the credit card so that in future I can be assured that this card will not be charged. If you think that it is not even possible, please acknowledge that it is not possible at all. I have now no way to access any of the azure portal as all email are used and I am not ready to create a new mail just for azure access as I will not be able to access the expenses and cost of azure usage.

 ○ Preferred method of communication:(Phone/Email) Phone